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 | |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 78 | static void csrNeighborRoamResetChannelInfo(tpCsrNeighborRoamChannelInfo rChInfo); |
| 79 | static void csrNeighborRoamResetCfgListChanScanControlInfo(tpAniSirGlobal pMac); |
| 80 | static void csrNeighborRoamResetPreauthControlInfo(tpAniSirGlobal pMac); |
| 81 | static void csrNeighborRoamDeregAllRssiIndication(tpAniSirGlobal pMac); |
| 82 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 83 | VOS_STATUS csrNeighborRoamNeighborLookupUPCallback (v_PVOID_t pAdapter, v_U8_t rssiNotification, |
| 84 | v_PVOID_t pUserCtxt); |
| 85 | VOS_STATUS csrNeighborRoamNeighborLookupDOWNCallback (v_PVOID_t pAdapter, v_U8_t rssiNotification, |
| 86 | v_PVOID_t pUserCtxt); |
| 87 | void csrNeighborRoamRRMNeighborReportResult(void *context, VOS_STATUS vosStatus); |
| 88 | eHalStatus csrRoamCopyConnectedProfile(tpAniSirGlobal pMac, tANI_U32 sessionId, tCsrRoamProfile *pDstProfile ); |
| 89 | |
| 90 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 91 | static eHalStatus csrNeighborRoamIssuePreauthReq(tpAniSirGlobal pMac); |
| 92 | VOS_STATUS csrNeighborRoamIssueNeighborRptRequest(tpAniSirGlobal pMac); |
| 93 | #endif |
| 94 | |
| 95 | /* State Transition macro */ |
| 96 | #define CSR_NEIGHBOR_ROAM_STATE_TRANSITION(newState)\ |
| 97 | {\ |
| 98 | pMac->roam.neighborRoamInfo.prevNeighborRoamState = pMac->roam.neighborRoamInfo.neighborRoamState;\ |
| 99 | pMac->roam.neighborRoamInfo.neighborRoamState = newState;\ |
Madan Mohan Koyyalamudi | 8bdd311 | 2012-09-24 13:55:14 -0700 | [diff] [blame] | 100 | smsLog(pMac, LOG1, FL("Neighbor Roam Transition from state %d ==> %d"), pMac->roam.neighborRoamInfo.prevNeighborRoamState, newState);\ |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | /* --------------------------------------------------------------------------- |
| 104 | |
| 105 | \fn csrNeighborRoamFreeNeighborRoamBSSNode |
| 106 | |
| 107 | \brief This function frees all the internal pointers CSR NeighborRoam BSS Info |
| 108 | and also frees the node itself |
| 109 | |
| 110 | \param pMac - The handle returned by macOpen. |
| 111 | neighborRoamBSSNode - Neighbor Roam BSS Node to be freed |
| 112 | |
| 113 | \return VOID |
| 114 | |
| 115 | ---------------------------------------------------------------------------*/ |
| 116 | void csrNeighborRoamFreeNeighborRoamBSSNode(tpAniSirGlobal pMac, tpCsrNeighborRoamBSSInfo neighborRoamBSSNode) |
| 117 | { |
| 118 | if (neighborRoamBSSNode) |
| 119 | { |
| 120 | if (neighborRoamBSSNode->pBssDescription) |
| 121 | { |
| 122 | vos_mem_free(neighborRoamBSSNode->pBssDescription); |
| 123 | neighborRoamBSSNode->pBssDescription = NULL; |
| 124 | } |
| 125 | vos_mem_free(neighborRoamBSSNode); |
| 126 | neighborRoamBSSNode = NULL; |
| 127 | } |
| 128 | |
| 129 | return; |
| 130 | } |
| 131 | |
| 132 | /* --------------------------------------------------------------------------- |
| 133 | |
| 134 | \fn csrNeighborRoamRemoveRoamableAPListEntry |
| 135 | |
| 136 | \brief This function removes a given entry from the given list |
| 137 | |
| 138 | \param pMac - The handle returned by macOpen. |
| 139 | pList - The list from which the entry should be removed |
| 140 | pNeighborEntry - Neighbor Roam BSS Node to be removed |
| 141 | |
| 142 | \return TRUE if successfully removed, else FALSE |
| 143 | |
| 144 | ---------------------------------------------------------------------------*/ |
| 145 | tANI_BOOLEAN csrNeighborRoamRemoveRoamableAPListEntry(tpAniSirGlobal pMac, |
| 146 | tDblLinkList *pList, tpCsrNeighborRoamBSSInfo pNeighborEntry) |
| 147 | { |
| 148 | if(pList) |
| 149 | { |
| 150 | return csrLLRemoveEntry(pList, &pNeighborEntry->List, LL_ACCESS_LOCK); |
| 151 | } |
| 152 | |
| 153 | smsLog(pMac, LOGE, FL("Removing neighbor BSS node from list failed. Current count = %d\n"), csrLLCount(pList)); |
| 154 | |
| 155 | return eANI_BOOLEAN_FALSE; |
| 156 | } |
| 157 | |
| 158 | /* --------------------------------------------------------------------------- |
| 159 | |
| 160 | \fn csrNeighborRoamGetRoamableAPListNextEntry |
| 161 | |
| 162 | \brief Gets the entry next to passed entry. If NULL is passed, return the entry in the head of the list |
| 163 | |
| 164 | \param pMac - The handle returned by macOpen. |
| 165 | pList - The list from which the entry should be returned |
| 166 | pNeighborEntry - Neighbor Roam BSS Node whose next entry should be returned |
| 167 | |
| 168 | \return Neighbor Roam BSS Node to be returned |
| 169 | |
| 170 | ---------------------------------------------------------------------------*/ |
| 171 | tpCsrNeighborRoamBSSInfo csrNeighborRoamGetRoamableAPListNextEntry(tpAniSirGlobal pMac, |
| 172 | tDblLinkList *pList, tpCsrNeighborRoamBSSInfo pNeighborEntry) |
| 173 | { |
| 174 | tListElem *pEntry = NULL; |
| 175 | tpCsrNeighborRoamBSSInfo pResult = NULL; |
| 176 | |
| 177 | if(pList) |
| 178 | { |
| 179 | if(NULL == pNeighborEntry) |
| 180 | { |
| 181 | pEntry = csrLLPeekHead(pList, LL_ACCESS_LOCK); |
| 182 | } |
| 183 | else |
| 184 | { |
| 185 | pEntry = csrLLNext(pList, &pNeighborEntry->List, LL_ACCESS_LOCK); |
| 186 | } |
| 187 | if(pEntry) |
| 188 | { |
| 189 | pResult = GET_BASE_ADDR(pEntry, tCsrNeighborRoamBSSInfo, List); |
| 190 | } |
| 191 | } |
| 192 | |
| 193 | return pResult; |
| 194 | } |
| 195 | |
| 196 | /* --------------------------------------------------------------------------- |
| 197 | |
| 198 | \fn csrNeighborRoamFreeRoamableBSSList |
| 199 | |
| 200 | \brief Empties and frees all the nodes in the roamable AP list |
| 201 | |
| 202 | \param pMac - The handle returned by macOpen. |
| 203 | pList - Neighbor Roam BSS List to be emptied |
| 204 | |
| 205 | \return VOID |
| 206 | |
| 207 | ---------------------------------------------------------------------------*/ |
| 208 | void csrNeighborRoamFreeRoamableBSSList(tpAniSirGlobal pMac, tDblLinkList *pList) |
| 209 | { |
| 210 | tpCsrNeighborRoamBSSInfo pResult = NULL; |
| 211 | |
Mohit Khanna | 2386376 | 2012-09-11 17:40:09 -0700 | [diff] [blame] | 212 | 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] | 213 | |
| 214 | /* Pick up the head, remove and free the node till the list becomes empty */ |
| 215 | while ((pResult = csrNeighborRoamGetRoamableAPListNextEntry(pMac, pList, NULL)) != NULL) |
| 216 | { |
| 217 | csrNeighborRoamRemoveRoamableAPListEntry(pMac, pList, pResult); |
| 218 | csrNeighborRoamFreeNeighborRoamBSSNode(pMac, pResult); |
| 219 | } |
| 220 | return; |
| 221 | } |
| 222 | |
| 223 | /* --------------------------------------------------------------------------- |
| 224 | |
| 225 | \fn csrNeighborRoamReassocIndCallback |
| 226 | |
| 227 | \brief Reassoc callback invoked by TL on crossing the registered re-assoc threshold. |
| 228 | Directly triggere HO in case of non-11r association |
| 229 | In case of 11R association, triggers a pre-auth eventually followed by actual HO |
| 230 | |
| 231 | \param pAdapter - VOS Context |
| 232 | trafficStatus - UP/DOWN indication from TL |
| 233 | pUserCtxt - Parameter for callback registered during callback registration. Should be pMac |
| 234 | |
| 235 | \return VOID |
| 236 | |
| 237 | ---------------------------------------------------------------------------*/ |
| 238 | VOS_STATUS csrNeighborRoamReassocIndCallback(v_PVOID_t pAdapter, |
| 239 | v_U8_t trafficStatus, |
| 240 | v_PVOID_t pUserCtxt) |
| 241 | { |
| 242 | tpAniSirGlobal pMac = PMAC_STRUCT( pUserCtxt ); |
| 243 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 244 | VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| 245 | |
| 246 | smsLog(pMac, LOG1, FL("Reassoc indication callback called")); |
| 247 | |
| 248 | |
| 249 | //smsLog(pMac, LOGE, FL("Reassoc indication callback called at state %d"), pNeighborRoamInfo->neighborRoamState); |
| 250 | |
| 251 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering DOWN event reassoc callback with TL. RSSI = %d"), pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1)); |
| 252 | |
| 253 | |
| 254 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1), |
| 255 | WLANTL_HO_THRESHOLD_DOWN, |
| 256 | csrNeighborRoamReassocIndCallback, |
| 257 | VOS_MODULE_ID_SME); |
| 258 | |
| 259 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 260 | { |
| 261 | //err msg |
| 262 | smsLog(pMac, LOGW, FL(" Couldn't deregister csrNeighborRoamReassocIndCallback with TL: Status = %d\n"), vosStatus); |
| 263 | } |
| 264 | |
| 265 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering UP event neighbor lookup callback with TL. RSSI = %d"), pNeighborRoamInfo->cfgParams.neighborLookupThreshold * (-1)); |
| 266 | /* Deregister reassoc callback. Ignore return status */ |
Madan Mohan Koyyalamudi | 286b60e | 2012-10-11 12:59:07 -0700 | [diff] [blame] | 267 | /*Varun TODO*/ |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 268 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->cfgParams.neighborLookupThreshold * (-1), |
| 269 | WLANTL_HO_THRESHOLD_DOWN, |
| 270 | csrNeighborRoamNeighborLookupUPCallback, |
| 271 | VOS_MODULE_ID_SME); |
| 272 | |
| 273 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 274 | { |
| 275 | //err msg |
| 276 | smsLog(pMac, LOGW, FL(" Couldn't deregister csrNeighborRoamReassocIndCallback with TL: Status = %d\n"), vosStatus); |
| 277 | } |
| 278 | |
| 279 | /* We dont need to run this timer any more. */ |
| 280 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer); |
| 281 | |
| 282 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 283 | if (pNeighborRoamInfo->is11rAssoc) |
| 284 | { |
| 285 | if (eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN == pNeighborRoamInfo->neighborRoamState) |
| 286 | { |
| 287 | csrNeighborRoamIssuePreauthReq(pMac); |
| 288 | } |
| 289 | else |
| 290 | { |
| 291 | smsLog(pMac, LOGE, FL("11R Reassoc indication received in unexpected state %d"), pNeighborRoamInfo->neighborRoamState); |
| 292 | VOS_ASSERT(0); |
| 293 | } |
| 294 | } |
| 295 | else |
| 296 | #endif |
| 297 | |
| 298 | #ifdef FEATURE_WLAN_CCX |
| 299 | if (pNeighborRoamInfo->isCCXAssoc) |
| 300 | { |
| 301 | if (eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN == pNeighborRoamInfo->neighborRoamState) |
| 302 | { |
| 303 | csrNeighborRoamIssuePreauthReq(pMac); |
| 304 | } |
| 305 | else |
| 306 | { |
| 307 | smsLog(pMac, LOGE, FL("CCX Reassoc indication received in unexpected state %d"), pNeighborRoamInfo->neighborRoamState); |
| 308 | VOS_ASSERT(0); |
| 309 | } |
| 310 | } |
| 311 | else |
| 312 | #endif |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 313 | #ifdef FEATURE_WLAN_LFR |
| 314 | if (csrRoamIsFastRoamEnabled(pMac)) |
| 315 | { |
| 316 | if (eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN == pNeighborRoamInfo->neighborRoamState) |
| 317 | { |
| 318 | csrNeighborRoamIssuePreauthReq(pMac); |
| 319 | } |
| 320 | else |
| 321 | { |
| 322 | smsLog(pMac, LOGE, FL("LFR Reassoc indication received in unexpected state %d"), pNeighborRoamInfo->neighborRoamState); |
| 323 | VOS_ASSERT(0); |
| 324 | } |
| 325 | } |
| 326 | else |
| 327 | #endif |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 328 | { |
| 329 | if (eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN == pNeighborRoamInfo->neighborRoamState) |
| 330 | { |
| 331 | csrNeighborRoamRequestHandoff(pMac); |
| 332 | } |
| 333 | else |
| 334 | { |
| 335 | smsLog(pMac, LOGE, FL("Non-11R Reassoc indication received in unexpected state %d"), pNeighborRoamInfo->neighborRoamState); |
| 336 | VOS_ASSERT(0); |
| 337 | } |
| 338 | } |
| 339 | return VOS_STATUS_SUCCESS; |
| 340 | } |
| 341 | |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 342 | /*CleanUP Routines*/ |
| 343 | static void csrNeighborRoamResetChannelInfo(tpCsrNeighborRoamChannelInfo rChInfo) |
| 344 | { |
| 345 | if ((rChInfo->IAPPNeighborListReceived == FALSE) && |
| 346 | (rChInfo->currentChannelListInfo.numOfChannels)) |
| 347 | { |
| 348 | rChInfo->currentChanIndex = CSR_NEIGHBOR_ROAM_INVALID_CHANNEL_INDEX; |
| 349 | rChInfo->currentChannelListInfo.numOfChannels = 0; |
| 350 | |
| 351 | if (rChInfo->currentChannelListInfo.ChannelList) |
| 352 | vos_mem_free(rChInfo->currentChannelListInfo.ChannelList); |
| 353 | |
| 354 | rChInfo->currentChannelListInfo.ChannelList = NULL; |
| 355 | rChInfo->chanListScanInProgress = eANI_BOOLEAN_FALSE; |
| 356 | } |
| 357 | else |
| 358 | { |
| 359 | rChInfo->currentChanIndex = 0; |
| 360 | rChInfo->chanListScanInProgress = eANI_BOOLEAN_TRUE; |
| 361 | } |
| 362 | } |
| 363 | |
| 364 | static void csrNeighborRoamResetCfgListChanScanControlInfo(tpAniSirGlobal pMac) |
| 365 | { |
| 366 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 367 | |
| 368 | /* Stop neighbor scan timer */ |
| 369 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 370 | |
Madan Mohan Koyyalamudi | 04039a1 | 2012-10-21 12:24:56 -0700 | [diff] [blame^] | 371 | /* Stop neighbor scan results refresh timer */ |
| 372 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer); |
| 373 | |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 374 | /* Abort any ongoing scan */ |
| 375 | if (eANI_BOOLEAN_TRUE == pNeighborRoamInfo->scanRspPending) |
| 376 | { |
| 377 | csrScanAbortMacScan(pMac); |
| 378 | } |
| 379 | pNeighborRoamInfo->scanRspPending = eANI_BOOLEAN_FALSE; |
| 380 | |
| 381 | /* Reset roam channel list information */ |
| 382 | csrNeighborRoamResetChannelInfo(&pNeighborRoamInfo->roamChannelInfo); |
| 383 | } |
| 384 | |
| 385 | static void csrNeighborRoamResetPreauthControlInfo(tpAniSirGlobal pMac) |
| 386 | { |
| 387 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 388 | |
| 389 | #if defined (WLAN_FEATURE_VOWIFI_11R) || defined (FEATURE_WLAN_CCX) || defined(FEATURE_WLAN_LFR) |
| 390 | pNeighborRoamInfo->is11rAssoc = eANI_BOOLEAN_FALSE; |
| 391 | pNeighborRoamInfo->FTRoamInfo.preAuthRspWaitTimerInfo.pMac = pMac; |
| 392 | pNeighborRoamInfo->FTRoamInfo.preAuthRspWaitTimerInfo.sessionId = |
| 393 | CSR_SESSION_ID_INVALID; |
| 394 | /* Purge pre-auth fail list */ |
| 395 | csrNeighborRoamPurgePreauthFailedList(pMac); |
| 396 | #endif |
| 397 | |
| 398 | pNeighborRoamInfo->FTRoamInfo.preauthRspPending = eANI_BOOLEAN_FALSE; |
| 399 | pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries = 0; |
| 400 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 401 | /* Do not free up the preauth done list here */ |
| 402 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0; |
| 403 | pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_FALSE; |
| 404 | pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport = 0; |
| 405 | vos_mem_zero(pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo, sizeof(tCsrNeighborReportBssInfo) * MAX_BSS_IN_NEIGHBOR_RPT); |
| 406 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->FTRoamInfo.preAuthRspWaitTimer); |
| 407 | #endif |
| 408 | } |
| 409 | |
| 410 | static void csrNeighborRoamDeregAllRssiIndication(tpAniSirGlobal pMac) |
| 411 | { |
| 412 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 413 | VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| 414 | |
| 415 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| 416 | FL("Deregister neighbor lookup UP callback with TL. RSSI = %d"), |
| 417 | pNeighborRoamInfo->cfgParams.neighborLookupThreshold * (-1)); |
| 418 | |
| 419 | /* Deregister reassoc callback. Ignore return status */ |
| 420 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, |
| 421 | (v_S7_t)pNeighborRoamInfo->cfgParams.neighborLookupThreshold * (-1), |
| 422 | WLANTL_HO_THRESHOLD_UP, |
| 423 | csrNeighborRoamNeighborLookupUPCallback, |
| 424 | VOS_MODULE_ID_SME); |
| 425 | |
| 426 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 427 | { |
| 428 | smsLog(pMac, LOGW, |
| 429 | FL("Couldn't deregister csrNeighborRoamNeighborLookupUPCallback " |
| 430 | "with TL: Status = %d\n"), vosStatus); |
| 431 | } |
| 432 | |
| 433 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| 434 | FL("Deregistering reassoc DOWN callback with TL. RSSI = %d"), |
| 435 | pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1)); |
| 436 | |
| 437 | /* Deregister reassoc callback. Ignore return status */ |
| 438 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, |
| 439 | (v_S7_t)pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1), |
| 440 | WLANTL_HO_THRESHOLD_DOWN, |
| 441 | csrNeighborRoamReassocIndCallback, |
| 442 | VOS_MODULE_ID_SME); |
| 443 | |
| 444 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 445 | { |
| 446 | smsLog(pMac, LOGW, |
| 447 | FL(" Couldn't deregister csrNeighborRoamReassocIndCallback with " |
| 448 | "TL: Status = %d\n"), vosStatus); |
| 449 | } |
| 450 | |
| 451 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| 452 | FL("Deregistering neighborLookup DOWN callback with TL. RSSI = %d"), |
| 453 | pNeighborRoamInfo->currentNeighborLookupThreshold * (-1)); |
| 454 | |
| 455 | /* Deregister neighbor lookup callback. Ignore return status */ |
| 456 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, |
| 457 | (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1), |
| 458 | WLANTL_HO_THRESHOLD_DOWN, |
| 459 | csrNeighborRoamNeighborLookupDOWNCallback, |
| 460 | VOS_MODULE_ID_SME); |
| 461 | |
| 462 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 463 | { |
| 464 | smsLog(pMac, LOGW, |
| 465 | FL(" Couldn't deregister csrNeighborRoamNeighborLookupDOWNCallback " |
| 466 | "with TL: Status = %d\n"), vosStatus); |
| 467 | } |
| 468 | |
| 469 | /* Reset thresholds only after deregistering DOWN event from TL */ |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 470 | pNeighborRoamInfo->currentNeighborLookupThreshold = |
| 471 | pNeighborRoamInfo->cfgParams.neighborLookupThreshold; |
Madan Mohan Koyyalamudi | 04039a1 | 2012-10-21 12:24:56 -0700 | [diff] [blame^] | 472 | pNeighborRoamInfo->currentScanResultsRefreshPeriod = |
| 473 | NEIGHBOR_SCAN_RESULTS_REFRESH_PERIOD_MIN; |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 474 | } |
| 475 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 476 | /* --------------------------------------------------------------------------- |
| 477 | |
| 478 | \fn csrNeighborRoamResetConnectedStateControlInfo |
| 479 | |
| 480 | \brief This function will reset the neighbor roam control info data structures. |
| 481 | This function should be invoked whenever we move to CONNECTED state from |
| 482 | any state other than INIT state |
| 483 | |
| 484 | \param pMac - The handle returned by macOpen. |
| 485 | |
| 486 | \return VOID |
| 487 | |
| 488 | ---------------------------------------------------------------------------*/ |
| 489 | void csrNeighborRoamResetConnectedStateControlInfo(tpAniSirGlobal pMac) |
| 490 | { |
| 491 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 492 | |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 493 | csrNeighborRoamResetChannelInfo(&pNeighborRoamInfo->roamChannelInfo); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 494 | csrNeighborRoamFreeRoamableBSSList(pMac, &pNeighborRoamInfo->roamableAPList); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 495 | |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 496 | /* We dont need to run this timer any more. */ |
| 497 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 498 | |
| 499 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 500 | /* Do not free up the preauth done list here */ |
| 501 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0; |
| 502 | pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_FALSE; |
| 503 | pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries = 0; |
| 504 | pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport = 0; |
| 505 | pNeighborRoamInfo->FTRoamInfo.preauthRspPending = 0; |
| 506 | vos_mem_zero(pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo, sizeof(tCsrNeighborReportBssInfo) * MAX_BSS_IN_NEIGHBOR_RPT); |
| 507 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->FTRoamInfo.preAuthRspWaitTimer); |
| 508 | #endif |
| 509 | |
| 510 | } |
| 511 | |
Madan Mohan Koyyalamudi | 4f292df | 2012-09-18 17:27:40 -0700 | [diff] [blame] | 512 | void csrNeighborRoamResetReportScanStateControlInfo(tpAniSirGlobal pMac) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 513 | { |
| 514 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 515 | pNeighborRoamInfo->csrSessionId = CSR_SESSION_ID_INVALID; |
| 516 | vos_mem_set(pNeighborRoamInfo->currAPbssid, sizeof(tCsrBssid), 0); |
| 517 | pNeighborRoamInfo->neighborScanTimerInfo.pMac = pMac; |
| 518 | pNeighborRoamInfo->neighborScanTimerInfo.sessionId = CSR_SESSION_ID_INVALID; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 519 | #ifdef FEATURE_WLAN_CCX |
| 520 | pNeighborRoamInfo->isCCXAssoc = eANI_BOOLEAN_FALSE; |
| 521 | pNeighborRoamInfo->isVOAdmitted = eANI_BOOLEAN_FALSE; |
| 522 | pNeighborRoamInfo->MinQBssLoadRequired = 0; |
| 523 | #endif |
Madan Mohan Koyyalamudi | 595208a | 2012-10-05 12:48:38 -0700 | [diff] [blame] | 524 | |
| 525 | /* Stop scan refresh timer */ |
| 526 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer); |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 527 | /* Purge roamable AP list */ |
| 528 | csrNeighborRoamFreeRoamableBSSList(pMac, &pNeighborRoamInfo->roamableAPList); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 529 | return; |
| 530 | } |
| 531 | |
Madan Mohan Koyyalamudi | 4f292df | 2012-09-18 17:27:40 -0700 | [diff] [blame] | 532 | /* --------------------------------------------------------------------------- |
| 533 | |
| 534 | \fn csrNeighborRoamResetInitStateControlInfo |
| 535 | |
| 536 | \brief This function will reset the neighbor roam control info data structures. |
| 537 | This function should be invoked whenever we move to CONNECTED state from |
| 538 | INIT state |
| 539 | |
| 540 | \param pMac - The handle returned by macOpen. |
| 541 | |
| 542 | \return VOID |
| 543 | |
| 544 | ---------------------------------------------------------------------------*/ |
| 545 | void csrNeighborRoamResetInitStateControlInfo(tpAniSirGlobal pMac) |
| 546 | { |
| 547 | csrNeighborRoamResetConnectedStateControlInfo(pMac); |
| 548 | |
| 549 | /* In addition to the above resets, we should clear off the curAPBssId/Session ID in the timers */ |
| 550 | csrNeighborRoamResetReportScanStateControlInfo(pMac); |
| 551 | } |
| 552 | |
| 553 | |
| 554 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 555 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 556 | /* --------------------------------------------------------------------------- |
| 557 | |
| 558 | \fn csrNeighborRoamBssIdScanFilter |
| 559 | |
| 560 | \brief This API is used to prepare a filter to obtain scan results when |
| 561 | we complete the scan in the REPORT_SCAN state after receiving a |
| 562 | valid neighbor report from AP. This filter includes BSSIDs received from |
| 563 | the neighbor report from the AP in addition to the other filter parameters |
| 564 | created from connected profile |
| 565 | |
| 566 | \param pMac - The handle returned by macOpen. |
| 567 | pScanFilter - Scan filter to be filled and returned |
| 568 | |
| 569 | \return eHAL_STATUS_SUCCESS on succesful filter creation, corresponding error |
| 570 | code otherwise |
| 571 | |
| 572 | ---------------------------------------------------------------------------*/ |
| 573 | static eHalStatus csrNeighborRoamBssIdScanFilter(tpAniSirGlobal pMac, tCsrScanResultFilter *pScanFilter) |
| 574 | { |
| 575 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 576 | tANI_U8 i = 0; |
| 577 | |
| 578 | VOS_ASSERT(pScanFilter != NULL); |
| 579 | vos_mem_zero(pScanFilter, sizeof(tCsrScanResultFilter)); |
| 580 | |
| 581 | pScanFilter->BSSIDs.numOfBSSIDs = pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport; |
| 582 | pScanFilter->BSSIDs.bssid = vos_mem_malloc(sizeof(tSirMacAddr) * pScanFilter->BSSIDs.numOfBSSIDs); |
| 583 | if (NULL == pScanFilter->BSSIDs.bssid) |
| 584 | { |
| 585 | smsLog(pMac, LOGE, FL("Scan Filter BSSID mem alloc failed")); |
| 586 | return eHAL_STATUS_FAILED_ALLOC; |
| 587 | } |
| 588 | |
| 589 | vos_mem_zero(pScanFilter->BSSIDs.bssid, sizeof(tSirMacAddr) * pScanFilter->BSSIDs.numOfBSSIDs); |
| 590 | |
| 591 | /* Populate the BSSID from Neighbor BSS info received from neighbor report */ |
| 592 | for (i = 0; i < pScanFilter->BSSIDs.numOfBSSIDs; i++) |
| 593 | { |
| 594 | vos_mem_copy(&pScanFilter->BSSIDs.bssid[i], |
| 595 | pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo[i].neighborBssId, sizeof(tSirMacAddr)); |
| 596 | } |
| 597 | |
| 598 | /* Fill other general scan filter params */ |
| 599 | return csrNeighborRoamPrepareScanProfileFilter(pMac, pScanFilter); |
| 600 | } |
| 601 | |
| 602 | /* --------------------------------------------------------------------------- |
| 603 | |
| 604 | \fn csrNeighborRoamPurgePreauthFailList |
| 605 | |
| 606 | \brief This function empties the preauth fail list |
| 607 | |
| 608 | \param pMac - The handle returned by macOpen. |
| 609 | |
| 610 | \return VOID |
| 611 | |
| 612 | ---------------------------------------------------------------------------*/ |
| 613 | void csrNeighborRoamPurgePreauthFailList(tpAniSirGlobal pMac) |
| 614 | { |
| 615 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 616 | |
| 617 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Purging the preauth fail list")); |
| 618 | while (pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress) |
| 619 | { |
| 620 | vos_mem_zero(pNeighborRoamInfo->FTRoamInfo.preAuthFailList.macAddress[pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress-1], |
| 621 | sizeof(tSirMacAddr)); |
| 622 | pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress--; |
| 623 | } |
| 624 | return; |
| 625 | } |
| 626 | |
| 627 | /* --------------------------------------------------------------------------- |
| 628 | |
| 629 | \fn csrNeighborRoamAddBssIdToPreauthFailList |
| 630 | |
| 631 | \brief This function adds the given BSSID to the Preauth fail list |
| 632 | |
| 633 | \param pMac - The handle returned by macOpen. |
| 634 | bssId - BSSID to be added to the preauth fail list |
| 635 | |
| 636 | \return eHAL_STATUS_SUCCESS on success, eHAL_STATUS_FAILURE otherwise |
| 637 | |
| 638 | ---------------------------------------------------------------------------*/ |
| 639 | eHalStatus csrNeighborRoamAddBssIdToPreauthFailList(tpAniSirGlobal pMac, tSirMacAddr bssId) |
| 640 | { |
| 641 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 642 | |
| 643 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL(" Added BSSID %02x:%02x:%02x:%02x:%02x:%02x to Preauth failed list\n"), |
| 644 | bssId[0], bssId[1], bssId[2], bssId[3], bssId[4], bssId[5]); |
| 645 | |
| 646 | |
| 647 | if ((pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress + 1) > |
| 648 | MAX_NUM_PREAUTH_FAIL_LIST_ADDRESS) |
| 649 | { |
| 650 | smsLog(pMac, LOGE, FL("Preauth fail list already full.. Cannot add new one")); |
| 651 | return eHAL_STATUS_FAILURE; |
| 652 | } |
| 653 | vos_mem_copy(pNeighborRoamInfo->FTRoamInfo.preAuthFailList.macAddress[pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress], |
| 654 | bssId, sizeof(tSirMacAddr)); |
| 655 | pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress++; |
| 656 | |
| 657 | return eHAL_STATUS_SUCCESS; |
| 658 | } |
| 659 | |
| 660 | /* --------------------------------------------------------------------------- |
| 661 | |
| 662 | \fn csrNeighborRoamIsPreauthCandidate |
| 663 | |
| 664 | \brief This function checks whether the given MAC address is already |
| 665 | present in the preauth fail list and returns TRUE/FALSE accordingly |
| 666 | |
| 667 | \param pMac - The handle returned by macOpen. |
| 668 | |
| 669 | \return eANI_BOOLEAN_TRUE if preauth candidate, eANI_BOOLEAN_FALSE otherwise |
| 670 | |
| 671 | ---------------------------------------------------------------------------*/ |
| 672 | tANI_BOOLEAN csrNeighborRoamIsPreauthCandidate(tpAniSirGlobal pMac, tSirMacAddr bssId) |
| 673 | { |
| 674 | tANI_U8 i = 0; |
| 675 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 676 | |
| 677 | if (0 == pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress) |
| 678 | return eANI_BOOLEAN_TRUE; |
| 679 | |
| 680 | for (i = 0; i < pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress; i++) |
| 681 | { |
| 682 | if (VOS_TRUE == vos_mem_compare(pNeighborRoamInfo->FTRoamInfo.preAuthFailList.macAddress[i], |
| 683 | bssId, sizeof(tSirMacAddr))) |
| 684 | { |
| 685 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("BSSID %02x:%02x:%02x:%02x:%02x:%02x already present in preauth fail list"), |
| 686 | bssId[0], bssId[1], bssId[2], bssId[3], bssId[4], bssId[5]); |
| 687 | return eANI_BOOLEAN_FALSE; |
| 688 | } |
| 689 | } |
| 690 | |
| 691 | return eANI_BOOLEAN_TRUE; |
| 692 | } |
| 693 | |
| 694 | /* --------------------------------------------------------------------------- |
| 695 | |
| 696 | \fn csrNeighborRoamIssuePreauthReq |
| 697 | |
| 698 | \brief This function issues preauth request to PE with the 1st AP entry in the |
| 699 | roamable AP list |
| 700 | |
| 701 | \param pMac - The handle returned by macOpen. |
| 702 | |
| 703 | \return eHAL_STATUS_SUCCESS on success, eHAL_STATUS_FAILURE otherwise |
| 704 | |
| 705 | ---------------------------------------------------------------------------*/ |
| 706 | static eHalStatus csrNeighborRoamIssuePreauthReq(tpAniSirGlobal pMac) |
| 707 | { |
| 708 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 709 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 710 | tpCsrNeighborRoamBSSInfo pNeighborBssNode; |
| 711 | |
| 712 | /* This must not be true here */ |
| 713 | VOS_ASSERT(pNeighborRoamInfo->FTRoamInfo.preauthRspPending == eANI_BOOLEAN_FALSE); |
| 714 | |
| 715 | /* Issue Preauth request to PE here */ |
| 716 | /* Need to issue the preauth request with the BSSID that is there in the head of the roamable AP list */ |
| 717 | /* Parameters that should be passed are BSSID, Channel number and the neighborScanPeriod(probably) */ |
| 718 | /* If roamableAPList gets empty, should transition to REPORT_SCAN state */ |
| 719 | pNeighborBssNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->roamableAPList, NULL); |
| 720 | |
| 721 | if (NULL == pNeighborBssNode) |
| 722 | { |
| 723 | smsLog(pMac, LOG1, FL("Roamable AP list is empty.. ")); |
| 724 | return eHAL_STATUS_FAILURE; |
| 725 | } |
| 726 | else |
| 727 | { |
Madan Mohan Koyyalamudi | 286b60e | 2012-10-11 12:59:07 -0700 | [diff] [blame] | 728 | status = csrRoamEnqueuePreauth(pMac, pNeighborRoamInfo->csrSessionId, pNeighborBssNode->pBssDescription, |
| 729 | eCsrPerformPreauth, eANI_BOOLEAN_TRUE); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 730 | if (eHAL_STATUS_SUCCESS != status) |
| 731 | { |
| 732 | smsLog(pMac, LOGE, FL("Send Preauth request to PE failed with status %d\n"), status); |
| 733 | return status; |
| 734 | } |
| 735 | } |
| 736 | |
| 737 | pNeighborRoamInfo->FTRoamInfo.preauthRspPending = eANI_BOOLEAN_TRUE; |
| 738 | |
| 739 | /* Increment the preauth retry count */ |
| 740 | pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries++; |
| 741 | |
| 742 | /* Transition the state to preauthenticating */ |
| 743 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING) |
Madan Mohan Koyyalamudi | 286b60e | 2012-10-11 12:59:07 -0700 | [diff] [blame] | 744 | #if 0 |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 745 | /* Start the preauth rsp timer */ |
| 746 | status = palTimerStart(pMac->hHdd, pNeighborRoamInfo->FTRoamInfo.preAuthRspWaitTimer, |
| 747 | CSR_NEIGHBOR_ROAM_PREAUTH_RSP_WAIT_MULTIPLIER * pNeighborRoamInfo->cfgParams.neighborScanPeriod * PAL_TIMER_TO_MS_UNIT, |
| 748 | eANI_BOOLEAN_FALSE); |
| 749 | if (eHAL_STATUS_SUCCESS != status) |
| 750 | { |
| 751 | smsLog(pMac, LOGE, FL("Preauth response wait timer start failed with status %d\n"), status); |
| 752 | return status; |
| 753 | } |
Madan Mohan Koyyalamudi | 286b60e | 2012-10-11 12:59:07 -0700 | [diff] [blame] | 754 | #endif |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 755 | |
| 756 | return status; |
| 757 | } |
| 758 | |
| 759 | /* --------------------------------------------------------------------------- |
| 760 | |
| 761 | \fn csrNeighborRoamPreauthRspHandler |
| 762 | |
| 763 | \brief This function handle the Preauth response from PE |
| 764 | Every preauth is allowed max 3 tries if it fails. If a bssid failed |
| 765 | for more than MAX_TRIES, we will remove it from the list and try |
| 766 | with the next node in the roamable AP list and add the BSSID to pre-auth failed |
| 767 | list. If no more entries present in |
| 768 | roamable AP list, transition to REPORT_SCAN state |
| 769 | |
| 770 | \param pMac - The handle returned by macOpen. |
| 771 | vosStatus - VOS_STATUS_SUCCESS/FAILURE/TIMEOUT status from PE |
| 772 | |
Madan Mohan Koyyalamudi | 7a579cc | 2012-10-21 11:25:39 -0700 | [diff] [blame] | 773 | \return eHAL_STATUS_SUCCESS on success (i.e. pre-auth processed), |
| 774 | eHAL_STATUS_FAILURE otherwise |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 775 | |
| 776 | ---------------------------------------------------------------------------*/ |
Madan Mohan Koyyalamudi | 7a579cc | 2012-10-21 11:25:39 -0700 | [diff] [blame] | 777 | eHalStatus csrNeighborRoamPreauthRspHandler(tpAniSirGlobal pMac, VOS_STATUS vosStatus) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 778 | { |
| 779 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 780 | eHalStatus status = eHAL_STATUS_SUCCESS; |
Madan Mohan Koyyalamudi | 7a579cc | 2012-10-21 11:25:39 -0700 | [diff] [blame] | 781 | eHalStatus preauthProcessed = eHAL_STATUS_SUCCESS; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 782 | tpCsrNeighborRoamBSSInfo pPreauthRspNode = NULL; |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 783 | |
| 784 | if (eANI_BOOLEAN_FALSE == pNeighborRoamInfo->FTRoamInfo.preauthRspPending) |
| 785 | { |
| 786 | |
| 787 | /* This can happen when we disconnect immediately |
| 788 | * after sending a pre-auth request. During processing |
| 789 | * of the disconnect command, we would have reset |
| 790 | * preauthRspPending and transitioned to INIT state. |
| 791 | */ |
| 792 | NEIGHBOR_ROAM_DEBUG(pMac, LOGW, |
| 793 | FL("Unexpected pre-auth response in state %d\n"), |
| 794 | pNeighborRoamInfo->neighborRoamState); |
Madan Mohan Koyyalamudi | 7a579cc | 2012-10-21 11:25:39 -0700 | [diff] [blame] | 795 | preauthProcessed = eHAL_STATUS_FAILURE; |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 796 | goto DEQ_PREAUTH; |
| 797 | } |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 798 | |
| 799 | // We can receive it in these 2 states. |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 800 | if ((pNeighborRoamInfo->neighborRoamState != eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING) && |
| 801 | (pNeighborRoamInfo->neighborRoamState != eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN)) |
| 802 | { |
Madan Mohan Koyyalamudi | 8186a9e | 2012-10-11 14:23:43 -0700 | [diff] [blame] | 803 | NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("Preauth response received in state %d\n"), |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 804 | pNeighborRoamInfo->neighborRoamState); |
Madan Mohan Koyyalamudi | 7a579cc | 2012-10-21 11:25:39 -0700 | [diff] [blame] | 805 | preauthProcessed = eHAL_STATUS_FAILURE; |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 806 | goto DEQ_PREAUTH; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 807 | } |
| 808 | |
| 809 | if (VOS_STATUS_E_TIMEOUT != vosStatus) |
| 810 | { |
Madan Mohan Koyyalamudi | 286b60e | 2012-10-11 12:59:07 -0700 | [diff] [blame] | 811 | #if 0 |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 812 | /* This means we got the response from PE. Hence stop the timer */ |
| 813 | status = palTimerStop(pMac->hHdd, pNeighborRoamInfo->FTRoamInfo.preAuthRspWaitTimer); |
Madan Mohan Koyyalamudi | 286b60e | 2012-10-11 12:59:07 -0700 | [diff] [blame] | 814 | #endif |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 815 | pNeighborRoamInfo->FTRoamInfo.preauthRspPending = eANI_BOOLEAN_FALSE; |
| 816 | } |
| 817 | |
| 818 | if (VOS_STATUS_SUCCESS == vosStatus) |
| 819 | { |
| 820 | pPreauthRspNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->roamableAPList, NULL); |
| 821 | } |
| 822 | if ((VOS_STATUS_SUCCESS == vosStatus) && (NULL != pPreauthRspNode)) |
| 823 | { |
| 824 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Preauth completed successfully after %d tries\n"), pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries); |
| 825 | |
| 826 | /* Preauth competer successfully. Insert the preauthenticated node to tail of preAuthDoneList */ |
| 827 | csrNeighborRoamRemoveRoamableAPListEntry(pMac, &pNeighborRoamInfo->roamableAPList, pPreauthRspNode); |
| 828 | csrLLInsertTail(&pNeighborRoamInfo->FTRoamInfo.preAuthDoneList, &pPreauthRspNode->List, LL_ACCESS_LOCK); |
| 829 | |
| 830 | /* Pre-auth completed successfully. Transition to PREAUTH Done state */ |
| 831 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE) |
| 832 | pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries = 0; |
| 833 | |
| 834 | /* The caller of this function would start a timer and by the time it expires, supplicant should |
| 835 | have provided the updated FTIEs to SME. So, when it expires, handoff will be triggered then */ |
| 836 | } |
| 837 | else |
| 838 | { |
| 839 | tpCsrNeighborRoamBSSInfo pNeighborBssNode = NULL; |
| 840 | tListElem *pEntry; |
| 841 | |
| 842 | smsLog(pMac, LOGE, FL("Preauth failed retry number %d, status = %d\n"), pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries, vosStatus); |
| 843 | |
| 844 | /* Preauth failed. Add the bssId to the preAuth failed list MAC Address. Also remove the AP from roamable AP list */ |
| 845 | if (pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries >= CSR_NEIGHBOR_ROAM_MAX_NUM_PREAUTH_RETRIES) |
| 846 | { |
| 847 | /* We are going to remove the node as it fails for more than MAX tries. Reset this count to 0 */ |
| 848 | pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries = 0; |
| 849 | |
| 850 | /* The one in the head of the list should be one with which we issued pre-auth and failed */ |
| 851 | pEntry = csrLLRemoveHead(&pNeighborRoamInfo->roamableAPList, LL_ACCESS_LOCK); |
| 852 | if(pEntry) |
| 853 | { |
| 854 | pNeighborBssNode = GET_BASE_ADDR(pEntry, tCsrNeighborRoamBSSInfo, List); |
| 855 | /* Add the BSSID to pre-auth fail list */ |
| 856 | status = csrNeighborRoamAddBssIdToPreauthFailList(pMac, pNeighborBssNode->pBssDescription->bssId); |
| 857 | /* Now we can free this node */ |
| 858 | csrNeighborRoamFreeNeighborRoamBSSNode(pMac, pNeighborBssNode); |
| 859 | } |
| 860 | } |
| 861 | |
| 862 | /* Issue preauth request for the same/next entry */ |
| 863 | if (eHAL_STATUS_SUCCESS == csrNeighborRoamIssuePreauthReq(pMac)) |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 864 | goto DEQ_PREAUTH; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 865 | |
| 866 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN) |
| 867 | |
| 868 | /* Start the neighbor results refresh timer and transition to REPORT_SCAN state to perform scan again */ |
| 869 | status = palTimerStart(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer, |
| 870 | pNeighborRoamInfo->cfgParams.neighborResultsRefreshPeriod * PAL_TIMER_TO_MS_UNIT, |
| 871 | eANI_BOOLEAN_FALSE); |
| 872 | if (eHAL_STATUS_SUCCESS != status) |
| 873 | { |
| 874 | smsLog(pMac, LOGE, FL("Neighbor results refresh timer start failed with status %d\n"), status); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 875 | } |
| 876 | } |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 877 | |
| 878 | DEQ_PREAUTH: |
| 879 | csrRoamDequeuePreauth(pMac); |
Madan Mohan Koyyalamudi | 7a579cc | 2012-10-21 11:25:39 -0700 | [diff] [blame] | 880 | return preauthProcessed; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 881 | } |
| 882 | #endif /* WLAN_FEATURE_NEIGHBOR_ROAMING */ |
| 883 | |
| 884 | /* --------------------------------------------------------------------------- |
| 885 | |
| 886 | \fn csrNeighborRoamPrepareScanProfileFilter |
| 887 | |
| 888 | \brief This function creates a scan filter based on the currently connected profile. |
| 889 | Based on this filter, scan results are obtained |
| 890 | |
| 891 | \param pMac - The handle returned by macOpen. |
| 892 | pScanFilter - Populated scan filter based on the connected profile |
| 893 | |
| 894 | \return eHAL_STATUS_SUCCESS on success, eHAL_STATUS_FAILURE otherwise |
| 895 | |
| 896 | ---------------------------------------------------------------------------*/ |
| 897 | eHalStatus csrNeighborRoamPrepareScanProfileFilter(tpAniSirGlobal pMac, tCsrScanResultFilter *pScanFilter) |
| 898 | { |
| 899 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 900 | tANI_U8 sessionId = (tANI_U8)pNeighborRoamInfo->csrSessionId; |
| 901 | tCsrRoamConnectedProfile *pCurProfile = &pMac->roam.roamSession[sessionId].connectedProfile; |
| 902 | tANI_U8 i = 0; |
| 903 | |
| 904 | VOS_ASSERT(pScanFilter != NULL); |
| 905 | |
| 906 | vos_mem_zero(pScanFilter, sizeof(tCsrScanResultFilter)); |
| 907 | |
| 908 | /* We dont want to set BSSID based Filter */ |
| 909 | pScanFilter->BSSIDs.numOfBSSIDs = 0; |
| 910 | |
| 911 | /* Populate all the information from the connected profile */ |
| 912 | pScanFilter->SSIDs.numOfSSIDs = 1; |
| 913 | pScanFilter->SSIDs.SSIDList = vos_mem_malloc(sizeof(tCsrSSIDInfo)); |
| 914 | if (NULL == pScanFilter->SSIDs.SSIDList) |
| 915 | { |
| 916 | smsLog(pMac, LOGE, FL("Scan Filter SSID mem alloc failed")); |
| 917 | return eHAL_STATUS_FAILED_ALLOC; |
| 918 | } |
| 919 | pScanFilter->SSIDs.SSIDList->handoffPermitted = 1; |
| 920 | pScanFilter->SSIDs.SSIDList->ssidHidden = 0; |
| 921 | pScanFilter->SSIDs.SSIDList->SSID.length = pCurProfile->SSID.length; |
| 922 | vos_mem_copy((void *)pScanFilter->SSIDs.SSIDList->SSID.ssId, (void *)pCurProfile->SSID.ssId, pCurProfile->SSID.length); |
| 923 | |
| 924 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Filtering for SSID %s from scan results.. SSID Length = %d\n"), |
| 925 | pScanFilter->SSIDs.SSIDList->SSID.ssId, pScanFilter->SSIDs.SSIDList->SSID.length); |
| 926 | pScanFilter->authType.numEntries = 1; |
| 927 | pScanFilter->authType.authType[0] = pCurProfile->AuthType; |
| 928 | |
| 929 | pScanFilter->EncryptionType.numEntries = 1; //This must be 1 |
| 930 | pScanFilter->EncryptionType.encryptionType[0] = pCurProfile->EncryptionType; |
| 931 | |
| 932 | pScanFilter->mcEncryptionType.numEntries = 1; |
| 933 | pScanFilter->mcEncryptionType.encryptionType[0] = pCurProfile->mcEncryptionType; |
| 934 | |
| 935 | pScanFilter->BSSType = pCurProfile->BSSType; |
| 936 | |
| 937 | /* We are intrested only in the scan results on channels that we scanned */ |
| 938 | pScanFilter->ChannelInfo.numOfChannels = pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels; |
| 939 | pScanFilter->ChannelInfo.ChannelList = vos_mem_malloc(pScanFilter->ChannelInfo.numOfChannels * sizeof(tANI_U8)); |
| 940 | if (NULL == pScanFilter->ChannelInfo.ChannelList) |
| 941 | { |
| 942 | smsLog(pMac, LOGE, FL("Scan Filter Channel list mem alloc failed")); |
| 943 | vos_mem_free(pScanFilter->SSIDs.SSIDList); |
| 944 | pScanFilter->SSIDs.SSIDList = NULL; |
| 945 | return eHAL_STATUS_FAILED_ALLOC; |
| 946 | } |
| 947 | for (i = 0; i < pScanFilter->ChannelInfo.numOfChannels; i++) |
| 948 | { |
| 949 | pScanFilter->ChannelInfo.ChannelList[i] = pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[i]; |
| 950 | } |
| 951 | |
| 952 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 953 | if (pNeighborRoamInfo->is11rAssoc) |
| 954 | { |
| 955 | /* MDIE should be added as a part of profile. This should be added as a part of filter as well */ |
| 956 | pScanFilter->MDID.mdiePresent = pCurProfile->MDID.mdiePresent; |
| 957 | pScanFilter->MDID.mobilityDomain = pCurProfile->MDID.mobilityDomain; |
| 958 | } |
| 959 | #endif |
| 960 | |
| 961 | return eHAL_STATUS_SUCCESS; |
| 962 | } |
| 963 | |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 964 | tANI_U32 csrGetCurrentAPRssi(tpAniSirGlobal pMac, tScanResultHandle *pScanResultList) |
| 965 | { |
| 966 | tCsrScanResultInfo *pScanResult; |
| 967 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 968 | tANI_U32 CurrAPRssi = -125; /* We are setting this as default value to make sure we return this value, |
| 969 | when we do not see this AP in the scan result for some reason.However,it is |
| 970 | less likely that we are associated to an AP and do not see it in the scan list*/ |
| 971 | |
| 972 | while (NULL != (pScanResult = csrScanResultGetNext(pMac, *pScanResultList))) |
| 973 | { |
| 974 | |
| 975 | if (VOS_TRUE == vos_mem_compare(pScanResult->BssDescriptor.bssId, |
| 976 | pNeighborRoamInfo->currAPbssid, sizeof(tSirMacAddr))) |
| 977 | { |
| 978 | /* We got a match with the currently associated AP. |
| 979 | * Capture the RSSI value and complete the while loop. |
| 980 | * The while loop is completed in order to make the current entry go back to NULL, |
| 981 | * and in the next while loop, it properly starts searching from the head of the list. |
| 982 | * TODO: Can also try setting the current entry directly to NULL as soon as we find the new AP*/ |
| 983 | |
| 984 | CurrAPRssi = (int)pScanResult->BssDescriptor.rssi * (-1) ; |
| 985 | |
| 986 | } else { |
| 987 | continue; |
| 988 | } |
| 989 | } |
| 990 | |
| 991 | return CurrAPRssi; |
| 992 | |
| 993 | } |
| 994 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 995 | /* --------------------------------------------------------------------------- |
| 996 | |
| 997 | \fn csrNeighborRoamProcessScanResults |
| 998 | |
| 999 | \brief This function extracts scan results, sorts on the basis of neighbor score(todo). |
| 1000 | Assumed that the results are already sorted by RSSI by csrScanGetResult |
| 1001 | |
| 1002 | \param pMac - The handle returned by macOpen. |
| 1003 | pScanResultList - Scan result result obtained from csrScanGetResult() |
| 1004 | |
| 1005 | \return VOID |
| 1006 | |
| 1007 | ---------------------------------------------------------------------------*/ |
| 1008 | |
| 1009 | static void csrNeighborRoamProcessScanResults(tpAniSirGlobal pMac, tScanResultHandle *pScanResultList) |
| 1010 | { |
| 1011 | tCsrScanResultInfo *pScanResult; |
| 1012 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1013 | tpCsrNeighborRoamBSSInfo pBssInfo; |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1014 | tANI_U32 CurrAPRssi; |
| 1015 | tANI_U8 RoamRssiDiff = pMac->roam.configParam.RoamRssiDiff; |
| 1016 | |
| 1017 | /*************************************************************** |
| 1018 | * Find out the Current AP RSSI and keep it handy to check if |
| 1019 | * it is better than the RSSI of the AP which we are |
| 1020 | * going to roam.If so, we are going to continue with the |
| 1021 | * current AP. |
| 1022 | ***************************************************************/ |
| 1023 | CurrAPRssi = csrGetCurrentAPRssi(pMac, pScanResultList); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1024 | |
| 1025 | /* Expecting the scan result already to be in the sorted order based on the RSSI */ |
| 1026 | /* Based on the previous state we need to check whether the list should be sorted again taking neighbor score into consideration */ |
| 1027 | /* If previous state is CFG_CHAN_LIST_SCAN, there should not be any neighbor score associated with any of the BSS. |
| 1028 | If the previous state is REPORT_QUERY, then there will be neighbor score for each of the APs */ |
| 1029 | /* 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 |
| 1030 | and rssi score are in the same order. This will be taken care later */ |
| 1031 | |
| 1032 | while (NULL != (pScanResult = csrScanResultGetNext(pMac, *pScanResultList))) |
| 1033 | { |
Madan Mohan Koyyalamudi | 04039a1 | 2012-10-21 12:24:56 -0700 | [diff] [blame^] | 1034 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, |
| 1035 | FL("Scan result: BSSID %02x:%02x:%02x:%02x:%02x:%02x (Rssi %d)"), |
| 1036 | pScanResult->BssDescriptor.bssId[0], |
| 1037 | pScanResult->BssDescriptor.bssId[1], |
| 1038 | pScanResult->BssDescriptor.bssId[2], |
| 1039 | pScanResult->BssDescriptor.bssId[3], |
| 1040 | pScanResult->BssDescriptor.bssId[4], |
| 1041 | pScanResult->BssDescriptor.bssId[5], |
| 1042 | abs(pScanResult->BssDescriptor.rssi)); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1043 | |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 1044 | if (VOS_TRUE == vos_mem_compare(pScanResult->BssDescriptor.bssId, |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1045 | pNeighborRoamInfo->currAPbssid, sizeof(tSirMacAddr))) |
| 1046 | { |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1047 | /* currently associated AP. Do not have this in the roamable AP list */ |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1048 | continue; |
| 1049 | } |
| 1050 | |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1051 | /* This condition is to ensure to roam to an AP with better RSSI. if the value of RoamRssiDiff is Zero, this feature |
| 1052 | * is disabled and we continue to roam without any check*/ |
| 1053 | if(RoamRssiDiff > 0) |
| 1054 | { |
| 1055 | if (abs(CurrAPRssi) < abs(pScanResult->BssDescriptor.rssi)) |
| 1056 | { |
| 1057 | /*Do not roam to an AP with worse RSSI than the current*/ |
| 1058 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| 1059 | "%s: [INFOLOG]Current AP rssi=%d new ap rssi worse=%d\n", __func__, |
| 1060 | CurrAPRssi, |
| 1061 | (int)pScanResult->BssDescriptor.rssi * (-1) ); |
| 1062 | continue; |
| 1063 | } else { |
| 1064 | /*Do not roam to an AP which is having better RSSI than the current AP, but still less than the |
| 1065 | * margin that is provided by user from the ini file (RoamRssiDiff)*/ |
| 1066 | if (abs(abs(CurrAPRssi) - abs(pScanResult->BssDescriptor.rssi)) < RoamRssiDiff) |
| 1067 | { |
| 1068 | continue; |
| 1069 | } |
| 1070 | else { |
| 1071 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| 1072 | "%s: [INFOLOG]Current AP rssi=%d new ap rssi better=%d\n", __func__, |
| 1073 | CurrAPRssi, |
| 1074 | (int)pScanResult->BssDescriptor.rssi * (-1) ); |
| 1075 | } |
| 1076 | } |
| 1077 | } |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1078 | |
| 1079 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 1080 | if (pNeighborRoamInfo->is11rAssoc) |
| 1081 | { |
| 1082 | if (!csrNeighborRoamIsPreauthCandidate(pMac, pScanResult->BssDescriptor.bssId)) |
| 1083 | { |
| 1084 | smsLog(pMac, LOGE, FL("BSSID present in pre-auth fail list.. Ignoring")); |
| 1085 | continue; |
| 1086 | } |
| 1087 | } |
| 1088 | #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| 1089 | |
| 1090 | #ifdef FEATURE_WLAN_CCX |
| 1091 | if (pNeighborRoamInfo->isCCXAssoc) |
| 1092 | { |
| 1093 | if (!csrNeighborRoamIsPreauthCandidate(pMac, pScanResult->BssDescriptor.bssId)) |
| 1094 | { |
| 1095 | smsLog(pMac, LOGE, FL("BSSID present in pre-auth fail list.. Ignoring")); |
| 1096 | continue; |
| 1097 | } |
| 1098 | } |
| 1099 | if ((pScanResult->BssDescriptor.QBSSLoad_present) && |
| 1100 | (pScanResult->BssDescriptor.QBSSLoad_avail)) |
| 1101 | { |
| 1102 | if (pNeighborRoamInfo->isVOAdmitted) |
| 1103 | { |
| 1104 | smsLog(pMac, LOG1, FL("New AP has %x BW available\n"), (unsigned int)pScanResult->BssDescriptor.QBSSLoad_avail); |
| 1105 | smsLog(pMac, LOG1, FL("We need %x BW available\n"),(unsigned int)pNeighborRoamInfo->MinQBssLoadRequired); |
| 1106 | if (pScanResult->BssDescriptor.QBSSLoad_avail < pNeighborRoamInfo->MinQBssLoadRequired) |
| 1107 | { |
| 1108 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| 1109 | "[INFOLOG]BSSID : %02x:%02x:%02x:%02x:%02x:%02x has no bandwidth ignoring..not adding to roam list\n", |
| 1110 | pScanResult->BssDescriptor.bssId[0], |
| 1111 | pScanResult->BssDescriptor.bssId[1], |
| 1112 | pScanResult->BssDescriptor.bssId[2], |
| 1113 | pScanResult->BssDescriptor.bssId[3], |
| 1114 | pScanResult->BssDescriptor.bssId[4], |
| 1115 | pScanResult->BssDescriptor.bssId[5]); |
| 1116 | continue; |
| 1117 | } |
| 1118 | } |
| 1119 | } |
| 1120 | else |
| 1121 | { |
| 1122 | smsLog(pMac, LOGE, FL("No QBss %x %x\n"), (unsigned int)pScanResult->BssDescriptor.QBSSLoad_avail, (unsigned int)pScanResult->BssDescriptor.QBSSLoad_present); |
| 1123 | if (pNeighborRoamInfo->isVOAdmitted) |
| 1124 | { |
| 1125 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| 1126 | "[INFOLOG]BSSID : %02x:%02x:%02x:%02x:%02x:%02x has no QBSSLoad IE, ignoring..not adding to roam list\n", |
| 1127 | pScanResult->BssDescriptor.bssId[0], |
| 1128 | pScanResult->BssDescriptor.bssId[1], |
| 1129 | pScanResult->BssDescriptor.bssId[2], |
| 1130 | pScanResult->BssDescriptor.bssId[3], |
| 1131 | pScanResult->BssDescriptor.bssId[4], |
| 1132 | pScanResult->BssDescriptor.bssId[5]); |
| 1133 | continue; |
| 1134 | } |
| 1135 | } |
| 1136 | #endif /* FEATURE_WLAN_CCX */ |
| 1137 | |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 1138 | #ifdef FEATURE_WLAN_LFR |
| 1139 | // If we are supporting legacy roaming, and |
| 1140 | // if the candidate is on the "pre-auth failed" list, ignore it. |
| 1141 | if (csrRoamIsFastRoamEnabled(pMac)) |
| 1142 | { |
| 1143 | if (!csrNeighborRoamIsPreauthCandidate(pMac, pScanResult->BssDescriptor.bssId)) |
| 1144 | { |
| 1145 | smsLog(pMac, LOGE, FL("BSSID present in pre-auth fail list.. Ignoring")); |
| 1146 | continue; |
| 1147 | } |
| 1148 | } |
| 1149 | #endif /* FEATURE_WLAN_LFR */ |
| 1150 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1151 | /* If the received timestamp in BSS description is earlier than the scan request timestamp, skip |
| 1152 | * this result */ |
| 1153 | if (pNeighborRoamInfo->scanRequestTimeStamp >= pScanResult->BssDescriptor.nReceivedTime) |
| 1154 | { |
| 1155 | smsLog(pMac, LOGE, FL("Ignoring BSS as it is older than the scan request timestamp")); |
| 1156 | continue; |
| 1157 | } |
| 1158 | |
| 1159 | pBssInfo = vos_mem_malloc(sizeof(tCsrNeighborRoamBSSInfo)); |
| 1160 | if (NULL == pBssInfo) |
| 1161 | { |
| 1162 | smsLog(pMac, LOGE, FL("Memory allocation for Neighbor Roam BSS Info failed.. Just ignoring")); |
| 1163 | continue; |
| 1164 | } |
| 1165 | |
| 1166 | pBssInfo->pBssDescription = vos_mem_malloc(pScanResult->BssDescriptor.length + sizeof(pScanResult->BssDescriptor.length)); |
| 1167 | if (pBssInfo->pBssDescription != NULL) |
| 1168 | { |
| 1169 | vos_mem_copy(pBssInfo->pBssDescription, &pScanResult->BssDescriptor, |
| 1170 | pScanResult->BssDescriptor.length + sizeof(pScanResult->BssDescriptor.length)); |
| 1171 | } |
| 1172 | else |
| 1173 | { |
| 1174 | smsLog(pMac, LOGE, FL("Memory allocation for Neighbor Roam BSS Descriptor failed.. Just ignoring")); |
| 1175 | vos_mem_free(pBssInfo); |
| 1176 | continue; |
| 1177 | |
| 1178 | } |
| 1179 | pBssInfo->apPreferenceVal = 10; //some value for now. Need to calculate the actual score based on RSSI and neighbor AP score |
| 1180 | |
| 1181 | /* Just add to the end of the list as it is already sorted by RSSI */ |
| 1182 | csrLLInsertTail(&pNeighborRoamInfo->roamableAPList, &pBssInfo->List, LL_ACCESS_LOCK); |
| 1183 | } |
| 1184 | |
| 1185 | /* 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 */ |
| 1186 | csrScanResultPurge(pMac, *pScanResultList); |
| 1187 | |
| 1188 | return; |
| 1189 | } |
| 1190 | |
| 1191 | /* --------------------------------------------------------------------------- |
| 1192 | |
| 1193 | \fn csrNeighborRoamHandleEmptyScanResult |
| 1194 | |
| 1195 | \brief This function will be invoked in CFG_CHAN_LIST_SCAN state when |
| 1196 | there are no valid APs in the scan result for roaming. This means |
| 1197 | out AP is the best and no other AP is around. No point in scanning |
| 1198 | again and again. Performing the following here. |
Madan Mohan Koyyalamudi | 04039a1 | 2012-10-21 12:24:56 -0700 | [diff] [blame^] | 1199 | 1. Remain in eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN. |
| 1200 | 2. Stop the neighbor scan timer. |
| 1201 | 3. Start neighbor scan results refresh timer. |
| 1202 | 4. Update currentScanResultsRefreshPeriod for next iteration. |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1203 | |
| 1204 | \param pMac - The handle returned by macOpen. |
| 1205 | |
| 1206 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 1207 | |
| 1208 | ---------------------------------------------------------------------------*/ |
| 1209 | static VOS_STATUS csrNeighborRoamHandleEmptyScanResult(tpAniSirGlobal pMac) |
| 1210 | { |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1211 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1212 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 1213 | |
Madan Mohan Koyyalamudi | 04039a1 | 2012-10-21 12:24:56 -0700 | [diff] [blame^] | 1214 | /* Stop neighbor scan timer */ |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1215 | status = palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
Madan Mohan Koyyalamudi | 04039a1 | 2012-10-21 12:24:56 -0700 | [diff] [blame^] | 1216 | if (eHAL_STATUS_SUCCESS != status) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1217 | { |
| 1218 | smsLog(pMac, LOGW, FL(" palTimerStop failed with status %d\n"), status); |
| 1219 | } |
| 1220 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1221 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 1222 | /* Clear off the old neighbor report details */ |
| 1223 | vos_mem_zero(&pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo, sizeof(tCsrNeighborReportBssInfo) * MAX_BSS_IN_NEIGHBOR_RPT); |
| 1224 | #endif |
| 1225 | |
Madan Mohan Koyyalamudi | 04039a1 | 2012-10-21 12:24:56 -0700 | [diff] [blame^] | 1226 | /* Start neighbor scan results refresh timer */ |
| 1227 | if (eHAL_STATUS_SUCCESS != |
| 1228 | palTimerStart(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer, |
| 1229 | pNeighborRoamInfo->currentScanResultsRefreshPeriod * PAL_TIMER_TO_MS_UNIT, |
| 1230 | eANI_BOOLEAN_FALSE)) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1231 | { |
Madan Mohan Koyyalamudi | 04039a1 | 2012-10-21 12:24:56 -0700 | [diff] [blame^] | 1232 | smsLog(pMac, LOGE, FL("Neighbor results refresh timer failed to start (%d)"), status); |
| 1233 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 1234 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 1235 | return VOS_STATUS_E_FAILURE; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1236 | } |
Madan Mohan Koyyalamudi | 04039a1 | 2012-10-21 12:24:56 -0700 | [diff] [blame^] | 1237 | smsLog(pMac, LOG1, FL("Neighbor results refresh timer started (%ld ms)"), |
| 1238 | (pNeighborRoamInfo->currentScanResultsRefreshPeriod * PAL_TIMER_TO_MS_UNIT)); |
| 1239 | |
| 1240 | /* Update currentScanResultsRefreshPeriod to be used for next iteration */ |
| 1241 | if ( (2*pNeighborRoamInfo->currentScanResultsRefreshPeriod) > |
| 1242 | NEIGHBOR_SCAN_RESULTS_REFRESH_PERIOD_MAX ) |
| 1243 | { |
| 1244 | pNeighborRoamInfo->currentScanResultsRefreshPeriod = |
| 1245 | NEIGHBOR_SCAN_RESULTS_REFRESH_PERIOD_MAX; |
| 1246 | } else { |
| 1247 | /* Double the refresh period every time we fail to find candidates */ |
| 1248 | pNeighborRoamInfo->currentScanResultsRefreshPeriod *= 2; |
| 1249 | } |
| 1250 | |
| 1251 | return VOS_STATUS_SUCCESS; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1252 | } |
| 1253 | |
| 1254 | /* --------------------------------------------------------------------------- |
| 1255 | |
| 1256 | \fn csrNeighborRoamScanRequestCallback |
| 1257 | |
| 1258 | \brief This function is the callback function registered in csrScanRequest() to |
| 1259 | indicate the completion of scan. If scan is completed for all the channels in |
| 1260 | the channel list, this function gets the scan result and starts the refresh results |
| 1261 | timer to avoid having stale results. If scan is not completed on all the channels, |
| 1262 | it restarts the neighbor scan timer which on expiry issues scan on the next |
| 1263 | channel |
| 1264 | |
| 1265 | \param halHandle - The handle returned by macOpen. |
| 1266 | pContext - not used |
| 1267 | scanId - not used |
| 1268 | status - not used |
| 1269 | |
| 1270 | \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| 1271 | |
| 1272 | ---------------------------------------------------------------------------*/ |
| 1273 | static eHalStatus csrNeighborRoamScanRequestCallback(tHalHandle halHandle, void *pContext, |
| 1274 | tANI_U32 scanId, eCsrScanStatus status) |
| 1275 | { |
| 1276 | tpAniSirGlobal pMac = (tpAniSirGlobal) halHandle; |
| 1277 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1278 | tANI_U8 currentChanIndex; |
| 1279 | tCsrScanResultFilter scanFilter; |
| 1280 | tScanResultHandle scanResult; |
| 1281 | tANI_U32 tempVal = 0; |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1282 | eHalStatus hstatus; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1283 | |
| 1284 | pMac->roam.neighborRoamInfo.scanRspPending = eANI_BOOLEAN_FALSE; |
| 1285 | |
| 1286 | /* This can happen when we receive a UP event from TL in any of the scan states. Silently ignore it */ |
| 1287 | if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED == pNeighborRoamInfo->neighborRoamState) |
| 1288 | { |
| 1289 | smsLog(pMac, LOGE, FL("Received in CONNECTED state. Must be because a UP event from TL after issuing scan request. Ignore it")); |
| 1290 | return eHAL_STATUS_SUCCESS; |
| 1291 | } |
| 1292 | |
| 1293 | /* -1 is done because the chanIndex would have got incremented after issuing a successful scan request */ |
| 1294 | currentChanIndex = (pMac->roam.neighborRoamInfo.roamChannelInfo.currentChanIndex) ? (pMac->roam.neighborRoamInfo.roamChannelInfo.currentChanIndex - 1) : 0; |
| 1295 | |
| 1296 | /* Validate inputs */ |
| 1297 | if (pMac->roam.neighborRoamInfo.roamChannelInfo.currentChannelListInfo.ChannelList) { |
| 1298 | NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("csrNeighborRoamScanRequestCallback received for Channel = %d, ChanIndex = %d"), |
| 1299 | pMac->roam.neighborRoamInfo.roamChannelInfo.currentChannelListInfo.ChannelList[currentChanIndex], currentChanIndex); |
| 1300 | } |
| 1301 | else |
| 1302 | { |
| 1303 | smsLog(pMac, LOG1, FL("Received during clean-up. Silently ignore scan completion event.")); |
| 1304 | return eHAL_STATUS_SUCCESS; |
| 1305 | } |
| 1306 | |
| 1307 | if (eANI_BOOLEAN_FALSE == pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress) |
| 1308 | { |
| 1309 | /* Scan is completed in the CFG_CHAN_SCAN state. We can transition to REPORT_SCAN state |
| 1310 | just to get the results and perform PREAUTH */ |
| 1311 | /* Now we have completed scanning the channel list. We have get the result by applying appropriate filter |
| 1312 | sort the results based on neighborScore and RSSI and select the best candidate out of the list */ |
| 1313 | NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("Channel list scan completed. Current chan index = %d"), currentChanIndex); |
| 1314 | VOS_ASSERT(pNeighborRoamInfo->roamChannelInfo.currentChanIndex == 0); |
| 1315 | |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 1316 | #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] | 1317 | /* If the state is REPORT_SCAN, then this must be the scan after the REPORT_QUERY state. So, we |
| 1318 | should use the BSSID filter made out of neighbor reports */ |
| 1319 | if (eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN == pNeighborRoamInfo->neighborRoamState) |
| 1320 | { |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1321 | hstatus = csrNeighborRoamBssIdScanFilter(pMac, &scanFilter); |
| 1322 | 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] | 1323 | tempVal = 1; |
| 1324 | } |
| 1325 | else |
| 1326 | #endif |
| 1327 | { |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1328 | hstatus = csrNeighborRoamPrepareScanProfileFilter(pMac, &scanFilter); |
| 1329 | 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] | 1330 | } |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1331 | if (eHAL_STATUS_SUCCESS != hstatus) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1332 | { |
| 1333 | smsLog(pMac, LOGE, FL("Scan Filter preparation failed for Assoc type %d.. Bailing out.."), tempVal); |
| 1334 | return eHAL_STATUS_FAILURE; |
| 1335 | } |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1336 | hstatus = csrScanGetResult(pMac, &scanFilter, &scanResult); |
| 1337 | 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] | 1338 | /* Process the scan results and update roamable AP list */ |
| 1339 | csrNeighborRoamProcessScanResults(pMac, &scanResult); |
| 1340 | |
| 1341 | /* Free the scan filter */ |
| 1342 | csrFreeScanFilter(pMac, &scanFilter); |
| 1343 | |
| 1344 | tempVal = csrLLCount(&pNeighborRoamInfo->roamableAPList); |
| 1345 | |
| 1346 | switch(pNeighborRoamInfo->neighborRoamState) |
| 1347 | { |
| 1348 | case eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN: |
| 1349 | if (tempVal) |
| 1350 | { |
Madan Mohan Koyyalamudi | 04039a1 | 2012-10-21 12:24:56 -0700 | [diff] [blame^] | 1351 | /* |
| 1352 | * Since there are non-zero candidates found |
| 1353 | * after the scan, reset the refresh period |
| 1354 | * to minimum. |
| 1355 | */ |
| 1356 | pNeighborRoamInfo->currentScanResultsRefreshPeriod = |
| 1357 | NEIGHBOR_SCAN_RESULTS_REFRESH_PERIOD_MIN; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1358 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 1359 | /* If this is a non-11r association, then we can register the reassoc callback here as we have some |
| 1360 | APs in the roamable AP list */ |
| 1361 | if (pNeighborRoamInfo->is11rAssoc) |
| 1362 | { |
| 1363 | /* Valid APs are found after scan. Now we can initiate pre-authentication */ |
| 1364 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN) |
| 1365 | } |
| 1366 | else |
| 1367 | #endif |
| 1368 | #ifdef FEATURE_WLAN_CCX |
| 1369 | /* If this is a non-11r association, then we can register the reassoc callback here as we have some |
| 1370 | APs in the roamable AP list */ |
| 1371 | if (pNeighborRoamInfo->isCCXAssoc) |
| 1372 | { |
| 1373 | /* Valid APs are found after scan. Now we can initiate pre-authentication */ |
| 1374 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN) |
| 1375 | } |
| 1376 | else |
| 1377 | #endif |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 1378 | #ifdef FEATURE_WLAN_LFR |
| 1379 | /* If LFR is enabled, then we can register the reassoc callback here as we have some |
| 1380 | APs in the roamable AP list */ |
| 1381 | if (csrRoamIsFastRoamEnabled(pMac)) |
| 1382 | { |
| 1383 | /* Valid APs are found after scan. Now we can initiate pre-authentication */ |
| 1384 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN) |
| 1385 | } |
| 1386 | else |
| 1387 | #endif |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1388 | { |
| 1389 | |
| 1390 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Completed scanning of CFG CHAN LIST in non-11r association. Registering reassoc callback")); |
| 1391 | /* Nothing much to do now. Will continue to remain in this state in case of non-11r association */ |
| 1392 | /* Stop the timer. But how long the roamable AP list will be valid in here. At some point of time, we |
| 1393 | need to restart the CFG CHAN list scan procedure if reassoc callback is not invoked from TL |
| 1394 | within certain duration */ |
| 1395 | |
| 1396 | // palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 1397 | } |
| 1398 | } |
| 1399 | else |
| 1400 | { |
Madan Mohan Koyyalamudi | b40e558 | 2012-10-11 16:48:42 -0700 | [diff] [blame] | 1401 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("No candidate found after scanning in state %d.. "), pNeighborRoamInfo->neighborRoamState); |
| 1402 | /* Handle it appropriately */ |
| 1403 | csrNeighborRoamHandleEmptyScanResult(pMac); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1404 | } |
| 1405 | break; |
| 1406 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 1407 | case eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN: |
| 1408 | if (!tempVal) |
| 1409 | { |
| 1410 | smsLog(pMac, LOGE, FL("No candidate found after scanning in state %d.. "), pNeighborRoamInfo->neighborRoamState); |
| 1411 | /* Stop the timer here as the same timer will be started again in CFG_CHAN_SCAN_STATE */ |
| 1412 | csrNeighborRoamTransitToCFGChanScan(pMac); |
| 1413 | } |
| 1414 | break; |
| 1415 | #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| 1416 | default: |
| 1417 | // Can come only in INIT state. Where in we are associated, we sent scan and user |
| 1418 | // in the meantime decides to disassoc, we will be in init state and still received call |
| 1419 | // back issued. Should not come here in any other state, printing just in case |
| 1420 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| 1421 | "%s: [INFOLOG] State %d\n", __func__, (pNeighborRoamInfo->neighborRoamState)); |
| 1422 | |
| 1423 | // Lets just exit out silently. |
| 1424 | return eHAL_STATUS_SUCCESS; |
| 1425 | } |
| 1426 | |
| 1427 | if (tempVal) |
| 1428 | { |
| 1429 | VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| 1430 | |
| 1431 | /* This timer should be started before registering the Reassoc callback with TL. This is because, it is very likely |
| 1432 | * that the callback getting called immediately and the timer would never be stopped when pre-auth is in progress */ |
| 1433 | if (eHAL_STATUS_SUCCESS != palTimerStart(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer, |
| 1434 | pNeighborRoamInfo->cfgParams.neighborResultsRefreshPeriod * PAL_TIMER_TO_MS_UNIT, |
| 1435 | eANI_BOOLEAN_FALSE)) |
| 1436 | { |
| 1437 | smsLog(pMac, LOGE, FL("Neighbor results refresh timer failed to start, status = %d"), status); |
| 1438 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 1439 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1440 | return eHAL_STATUS_FAILURE; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1441 | } |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1442 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1443 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Registering DOWN event Reassoc callback with TL. RSSI = %d"), pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1)); |
| 1444 | /* Register a reassoc Indication callback */ |
| 1445 | vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1), |
| 1446 | WLANTL_HO_THRESHOLD_DOWN, |
| 1447 | csrNeighborRoamReassocIndCallback, |
| 1448 | VOS_MODULE_ID_SME, pMac); |
| 1449 | |
| 1450 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 1451 | { |
| 1452 | //err msg |
| 1453 | smsLog(pMac, LOGW, FL(" Couldn't register csrNeighborRoamReassocIndCallback with TL: Status = %d\n"), vosStatus); |
| 1454 | } |
| 1455 | |
| 1456 | } |
| 1457 | } |
| 1458 | else |
| 1459 | { |
| 1460 | |
| 1461 | /* 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] | 1462 | hstatus = palTimerStart(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer, |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1463 | pNeighborRoamInfo->cfgParams.neighborScanPeriod * PAL_TIMER_TO_MS_UNIT, |
| 1464 | eANI_BOOLEAN_FALSE); |
| 1465 | |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1466 | if (eHAL_STATUS_SUCCESS != hstatus) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1467 | { |
| 1468 | /* Timer start failed.. Should we ASSERT here??? */ |
| 1469 | smsLog(pMac, LOGE, FL("Neighbor scan PAL Timer start failed, status = %d, Ignoring state transition"), status); |
| 1470 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 1471 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1472 | return eHAL_STATUS_FAILURE; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1473 | } |
| 1474 | } |
| 1475 | return eHAL_STATUS_SUCCESS; |
| 1476 | } |
| 1477 | |
| 1478 | /* --------------------------------------------------------------------------- |
| 1479 | |
| 1480 | \fn csrNeighborRoamIssueBgScanRequest |
| 1481 | |
| 1482 | \brief This function issues CSR scan request after populating all the BG scan params |
| 1483 | passed |
| 1484 | |
| 1485 | \param pMac - The handle returned by macOpen. |
| 1486 | pBgScanParams - Params that need to be populated into csr Scan request |
| 1487 | |
| 1488 | \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| 1489 | |
| 1490 | ---------------------------------------------------------------------------*/ |
| 1491 | eHalStatus csrNeighborRoamIssueBgScanRequest(tpAniSirGlobal pMac, tCsrBGScanRequest *pBgScanParams) |
| 1492 | { |
| 1493 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 1494 | tANI_U32 scanId; |
| 1495 | tCsrScanRequest scanReq; |
| 1496 | tANI_U8 channel; |
| 1497 | |
| 1498 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("csrNeighborRoamIssueBgScanRequest for Channel = %d, ChanIndex = %d"), |
| 1499 | pBgScanParams->ChannelInfo.ChannelList[0], pMac->roam.neighborRoamInfo.roamChannelInfo.currentChanIndex); |
| 1500 | |
| 1501 | |
| 1502 | //send down the scan req for 1 channel on the associated SSID |
| 1503 | palZeroMemory(pMac->hHdd, &scanReq, sizeof(tCsrScanRequest)); |
| 1504 | /* Fill in the SSID Info */ |
| 1505 | scanReq.SSIDs.numOfSSIDs = 1; |
| 1506 | scanReq.SSIDs.SSIDList = vos_mem_malloc(sizeof(tCsrSSIDInfo) * scanReq.SSIDs.numOfSSIDs); |
| 1507 | if(NULL == scanReq.SSIDs.SSIDList) |
| 1508 | { |
| 1509 | //err msg |
| 1510 | smsLog(pMac, LOGW, FL("Couldn't allocate memory for the SSID..Freeing memory allocated for Channel List\n")); |
| 1511 | return eHAL_STATUS_FAILURE; |
| 1512 | } |
| 1513 | vos_mem_zero(scanReq.SSIDs.SSIDList, sizeof(tCsrSSIDInfo) * scanReq.SSIDs.numOfSSIDs); |
| 1514 | |
| 1515 | scanReq.SSIDs.SSIDList[0].handoffPermitted = eANI_BOOLEAN_TRUE; |
| 1516 | scanReq.SSIDs.SSIDList[0].ssidHidden = eANI_BOOLEAN_TRUE; |
| 1517 | vos_mem_copy((void *)&scanReq.SSIDs.SSIDList[0].SSID, (void *)&pBgScanParams->SSID, sizeof(pBgScanParams->SSID)); |
| 1518 | |
| 1519 | scanReq.ChannelInfo.numOfChannels = pBgScanParams->ChannelInfo.numOfChannels; |
| 1520 | |
| 1521 | channel = pBgScanParams->ChannelInfo.ChannelList[0]; |
| 1522 | scanReq.ChannelInfo.ChannelList = &channel; |
| 1523 | |
| 1524 | scanReq.BSSType = eCSR_BSS_TYPE_INFRASTRUCTURE; |
| 1525 | scanReq.scanType = eSIR_ACTIVE_SCAN; |
| 1526 | scanReq.requestType = eCSR_SCAN_HO_BG_SCAN; |
| 1527 | scanReq.maxChnTime = pBgScanParams->maxChnTime; |
| 1528 | scanReq.minChnTime = pBgScanParams->minChnTime; |
| 1529 | status = csrScanRequest(pMac, CSR_SESSION_ID_INVALID, &scanReq, |
| 1530 | &scanId, csrNeighborRoamScanRequestCallback, NULL); |
| 1531 | if (eHAL_STATUS_SUCCESS != status) |
| 1532 | { |
| 1533 | smsLog(pMac, LOGE, FL("CSR Scan Request failed with status %d"), status); |
| 1534 | vos_mem_free(scanReq.SSIDs.SSIDList); |
| 1535 | return status; |
| 1536 | } |
| 1537 | pMac->roam.neighborRoamInfo.scanRspPending = eANI_BOOLEAN_TRUE; |
| 1538 | |
| 1539 | vos_mem_free(scanReq.SSIDs.SSIDList); |
| 1540 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Channel List Address = %08x, Actual index = %d"), |
| 1541 | &pMac->roam.neighborRoamInfo.roamChannelInfo.currentChannelListInfo.ChannelList[0], |
| 1542 | pMac->roam.neighborRoamInfo.roamChannelInfo.currentChanIndex); |
| 1543 | return status; |
| 1544 | } |
| 1545 | |
| 1546 | /* --------------------------------------------------------------------------- |
| 1547 | |
| 1548 | \fn csrNeighborRoamPerformBgScan |
| 1549 | |
| 1550 | \brief This function is invoked on every expiry of neighborScanTimer till all |
| 1551 | the channels in the channel list are scanned. It populates necessary |
| 1552 | parameters for BG scan and calls appropriate AP to invoke the CSR scan |
| 1553 | request |
| 1554 | |
| 1555 | \param pMac - The handle returned by macOpen. |
| 1556 | |
| 1557 | \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| 1558 | |
| 1559 | ---------------------------------------------------------------------------*/ |
| 1560 | eHalStatus csrNeighborRoamPerformBgScan(tpAniSirGlobal pMac) |
| 1561 | { |
| 1562 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 1563 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1564 | tCsrBGScanRequest bgScanParams; |
| 1565 | tANI_U8 broadcastBssid[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
| 1566 | tANI_U8 channel = 0; |
| 1567 | |
| 1568 | if (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList) |
| 1569 | { |
| 1570 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Channel List Address = %08x"), &pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[0]); |
| 1571 | } |
| 1572 | else |
| 1573 | { |
| 1574 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Channel List Empty")); |
| 1575 | // Go back and restart. Mostly timer start failure has occured. |
| 1576 | // When timer start is declared a failure, then we delete the list. |
| 1577 | // Should not happen now as we stop and then only start the scan timer. |
| 1578 | // still handle the unlikely case. |
| 1579 | csrNeighborRoamHandleEmptyScanResult(pMac); |
| 1580 | return status; |
| 1581 | } |
| 1582 | /* Need to perform scan here before getting the list */ |
| 1583 | vos_mem_copy(bgScanParams.bssid, broadcastBssid, sizeof(tCsrBssid)); |
| 1584 | bgScanParams.SSID.length = pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.length; |
| 1585 | vos_mem_copy(bgScanParams.SSID.ssId, pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.ssId, |
| 1586 | pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.length); |
| 1587 | |
| 1588 | channel = pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[pNeighborRoamInfo->roamChannelInfo.currentChanIndex]; |
| 1589 | bgScanParams.ChannelInfo.numOfChannels = 1; |
| 1590 | bgScanParams.ChannelInfo.ChannelList = &channel; |
| 1591 | |
| 1592 | bgScanParams.minChnTime = pNeighborRoamInfo->cfgParams.minChannelScanTime; |
| 1593 | bgScanParams.maxChnTime = pNeighborRoamInfo->cfgParams.maxChannelScanTime; |
| 1594 | |
| 1595 | status = csrNeighborRoamIssueBgScanRequest(pMac, &bgScanParams); |
| 1596 | if (eHAL_STATUS_SUCCESS != status) |
| 1597 | { |
| 1598 | smsLog(pMac, LOGE, FL("Issue of BG Scan request failed: Status = %d"), status); |
| 1599 | return status; |
| 1600 | } |
| 1601 | |
| 1602 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex++; |
| 1603 | if (pNeighborRoamInfo->roamChannelInfo.currentChanIndex >= |
| 1604 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels) |
| 1605 | { |
| 1606 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Completed scanning channels in Channel List: CurrChanIndex = %d, Num Channels = %d"), |
| 1607 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex, |
| 1608 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels); |
| 1609 | /* We have completed scanning all the channels */ |
| 1610 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex = 0; |
| 1611 | /* We are no longer scanning the channel list. Next timer firing should be used to get the scan results |
| 1612 | and select the best AP in the list */ |
| 1613 | if (eANI_BOOLEAN_TRUE == pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress) |
| 1614 | { |
| 1615 | pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_FALSE; |
| 1616 | } |
| 1617 | } |
| 1618 | |
| 1619 | return status; |
| 1620 | } |
| 1621 | |
| 1622 | /* --------------------------------------------------------------------------- |
| 1623 | |
| 1624 | \fn csrNeighborRoamNeighborScanTimerCallback |
| 1625 | |
| 1626 | \brief This function is the neighbor scan timer callback function. It invokes |
| 1627 | the BG scan request based on the current and previous states |
| 1628 | |
| 1629 | \param pv - CSR timer context info which includes pMac and session ID |
| 1630 | |
| 1631 | \return VOID |
| 1632 | |
| 1633 | ---------------------------------------------------------------------------*/ |
| 1634 | void csrNeighborRoamNeighborScanTimerCallback(void *pv) |
| 1635 | { |
| 1636 | tCsrTimerInfo *pInfo = (tCsrTimerInfo *)pv; |
| 1637 | tpAniSirGlobal pMac = pInfo->pMac; |
| 1638 | tANI_U32 sessionId = pInfo->sessionId; |
| 1639 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1640 | |
| 1641 | // check if bg scan is on going, no need to send down the new params if true |
| 1642 | if(eANI_BOOLEAN_TRUE == pNeighborRoamInfo->scanRspPending) |
| 1643 | { |
| 1644 | //msg |
| 1645 | smsLog(pMac, LOGW, FL("Already BgScanRsp is Pending\n")); |
| 1646 | return; |
| 1647 | } |
| 1648 | |
| 1649 | VOS_ASSERT(sessionId == pNeighborRoamInfo->csrSessionId); |
| 1650 | |
| 1651 | switch (pNeighborRoamInfo->neighborRoamState) |
| 1652 | { |
| 1653 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 1654 | case eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN: |
| 1655 | switch(pNeighborRoamInfo->prevNeighborRoamState) |
| 1656 | { |
| 1657 | case eCSR_NEIGHBOR_ROAM_STATE_REPORT_QUERY: |
| 1658 | csrNeighborRoamPerformBgScan(pMac); |
| 1659 | break; |
| 1660 | default: |
| 1661 | smsLog(pMac, LOGE, FL("Neighbor scan callback received in state %d, prev state = %d"), |
| 1662 | pNeighborRoamInfo->neighborRoamState, pNeighborRoamInfo->prevNeighborRoamState); |
| 1663 | break; |
| 1664 | } |
| 1665 | break; |
| 1666 | #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| 1667 | case eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN: |
| 1668 | csrNeighborRoamPerformBgScan(pMac); |
| 1669 | break; |
| 1670 | default: |
| 1671 | break; |
| 1672 | } |
| 1673 | return; |
| 1674 | } |
| 1675 | |
| 1676 | /* --------------------------------------------------------------------------- |
| 1677 | |
| 1678 | \fn csrNeighborRoamResultsRefreshTimerCallback |
| 1679 | |
| 1680 | \brief This function is the timer callback function for results refresh timer. |
| 1681 | When this is invoked, it is as good as down event received from TL. So, |
| 1682 | clear off the roamable AP list and start the scan procedure based on 11R |
| 1683 | or non-11R association |
| 1684 | |
| 1685 | \param context - CSR timer context info which includes pMac and session ID |
| 1686 | |
| 1687 | \return VOID |
| 1688 | |
| 1689 | ---------------------------------------------------------------------------*/ |
| 1690 | void csrNeighborRoamResultsRefreshTimerCallback(void *context) |
| 1691 | { |
| 1692 | tCsrTimerInfo *pInfo = (tCsrTimerInfo *)context; |
| 1693 | tpAniSirGlobal pMac = pInfo->pMac; |
| 1694 | VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| 1695 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1696 | |
| 1697 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering DOWN event reassoc callback with TL. RSSI = %d"), pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1)); |
| 1698 | |
| 1699 | /* Deregister reassoc callback. Ignore return status */ |
| 1700 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1), |
| 1701 | WLANTL_HO_THRESHOLD_DOWN, |
| 1702 | csrNeighborRoamReassocIndCallback, |
| 1703 | VOS_MODULE_ID_SME); |
| 1704 | |
| 1705 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 1706 | { |
| 1707 | //err msg |
| 1708 | smsLog(pMac, LOGW, FL(" Couldn't deregister csrNeighborRoamReassocIndCallback with TL: Status = %d\n"), vosStatus); |
| 1709 | } |
| 1710 | |
| 1711 | /* Reset all the variables just as no scan had happened before */ |
| 1712 | csrNeighborRoamResetConnectedStateControlInfo(pMac); |
| 1713 | |
| 1714 | #if defined WLAN_FEATURE_VOWIFI_11R && defined WLAN_FEATURE_VOWIFI |
| 1715 | if ((pNeighborRoamInfo->is11rAssoc) && (pMac->rrm.rrmSmeContext.rrmConfig.rrmEnabled)) |
| 1716 | { |
| 1717 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("11R Association:Neighbor Lookup Down event received in CONNECTED state")); |
| 1718 | vosStatus = csrNeighborRoamIssueNeighborRptRequest(pMac); |
| 1719 | if (VOS_STATUS_SUCCESS != vosStatus) |
| 1720 | { |
| 1721 | smsLog(pMac, LOGE, FL("Neighbor report request failed. status = %d\n"), vosStatus); |
| 1722 | return; |
| 1723 | } |
| 1724 | /* Increment the neighbor report retry count after sending the neighbor request successfully */ |
| 1725 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum++; |
| 1726 | pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_TRUE; |
| 1727 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_QUERY) |
| 1728 | } |
| 1729 | else |
| 1730 | #endif |
| 1731 | { |
| 1732 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Non 11R or CCX Association:Neighbor Lookup Down event received in CONNECTED state")); |
| 1733 | vosStatus = csrNeighborRoamTransitToCFGChanScan(pMac); |
| 1734 | if (VOS_STATUS_SUCCESS != vosStatus) |
| 1735 | { |
| 1736 | return; |
| 1737 | } |
| 1738 | } |
| 1739 | return; |
| 1740 | } |
| 1741 | |
| 1742 | #if defined WLAN_FEATURE_VOWIFI_11R && defined WLAN_FEATURE_VOWIFI |
| 1743 | /* --------------------------------------------------------------------------- |
| 1744 | |
| 1745 | \fn csrNeighborRoamIssueNeighborRptRequest |
| 1746 | |
| 1747 | \brief This function is invoked when TL issues a down event and the current assoc |
| 1748 | is a 11R association. It invokes SME RRM API to issue the neighbor request to |
| 1749 | the currently associated AP with the current SSID |
| 1750 | |
| 1751 | \param pMac - The handle returned by macOpen. |
| 1752 | |
| 1753 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 1754 | |
| 1755 | ---------------------------------------------------------------------------*/ |
| 1756 | VOS_STATUS csrNeighborRoamIssueNeighborRptRequest(tpAniSirGlobal pMac) |
| 1757 | { |
| 1758 | tRrmNeighborRspCallbackInfo callbackInfo; |
| 1759 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1760 | tRrmNeighborReq neighborReq; |
| 1761 | |
| 1762 | |
| 1763 | neighborReq.no_ssid = 0; |
| 1764 | |
| 1765 | /* Fill in the SSID */ |
| 1766 | neighborReq.ssid.length = pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.length; |
| 1767 | vos_mem_copy(neighborReq.ssid.ssId, pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.ssId, |
| 1768 | pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.length); |
| 1769 | |
| 1770 | callbackInfo.neighborRspCallback = csrNeighborRoamRRMNeighborReportResult; |
| 1771 | callbackInfo.neighborRspCallbackContext = pMac; |
| 1772 | callbackInfo.timeout = pNeighborRoamInfo->FTRoamInfo.neighborReportTimeout; |
| 1773 | |
| 1774 | return sme_NeighborReportRequest(pMac,(tANI_U8) pNeighborRoamInfo->csrSessionId, &neighborReq, &callbackInfo); |
| 1775 | } |
| 1776 | |
| 1777 | /* --------------------------------------------------------------------------- |
| 1778 | |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 1779 | \fn csrNeighborRoamMergeChannelLists |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 1780 | |
| 1781 | \brief This function is used to merge two channel list. |
| 1782 | NB: If called with outputNumOfChannels == 0, this routines |
| 1783 | simply copies the input channel list to the output channel list. |
| 1784 | |
| 1785 | \param pMac - The handle returned by macOpen. |
| 1786 | \param pInputChannelList - The addtional channels to merge in to the "merged" channels list. |
| 1787 | \param inputNumOfChannels - The number of additional channels. |
| 1788 | \param pOutputChannelList - The place to put the "merged" channel list. |
| 1789 | \param outputNumOfChannels - The original number of channels in the "merged" channels list. |
| 1790 | \param pMergedOutputNumOfChannels - The final number of channels in the "merged" channel list. |
| 1791 | |
| 1792 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 1793 | |
| 1794 | ---------------------------------------------------------------------------*/ |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 1795 | VOS_STATUS csrNeighborRoamMergeChannelLists( |
| 1796 | tpAniSirGlobal pMac, |
| 1797 | tANI_U8 *pInputChannelList, |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 1798 | int inputNumOfChannels, |
| 1799 | tANI_U8 *pOutputChannelList, |
| 1800 | int outputNumOfChannels, |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 1801 | int *pMergedOutputNumOfChannels |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 1802 | ) |
| 1803 | { |
| 1804 | int i = 0; |
| 1805 | int j = 0; |
| 1806 | int numChannels = outputNumOfChannels; |
| 1807 | |
| 1808 | // Check for NULL pointer |
| 1809 | if (!pInputChannelList) return eHAL_STATUS_E_NULL_VALUE; |
| 1810 | |
| 1811 | // Check for NULL pointer |
| 1812 | if (!pOutputChannelList) return eHAL_STATUS_E_NULL_VALUE; |
| 1813 | |
| 1814 | // Add the "new" channels in the input list to the end of the output list. |
| 1815 | for (i = 0; i < inputNumOfChannels; i++) |
| 1816 | { |
| 1817 | for (j = 0; j < outputNumOfChannels; j++) |
| 1818 | { |
| 1819 | if (pInputChannelList[i] == pOutputChannelList[j]) |
| 1820 | break; |
| 1821 | } |
| 1822 | if (j == outputNumOfChannels) |
| 1823 | { |
| 1824 | if (pInputChannelList[i]) |
| 1825 | { |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 1826 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_ERROR, |
| 1827 | "%s: [INFOLOG] Adding extra %d to Neighbor channel list\n", __func__, |
| 1828 | pInputChannelList[i]); |
| 1829 | pOutputChannelList[numChannels] = pInputChannelList[i]; |
| 1830 | numChannels++; |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 1831 | } |
| 1832 | } |
| 1833 | } |
| 1834 | |
| 1835 | // Return final number of channels |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 1836 | *pMergedOutputNumOfChannels = numChannels; |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 1837 | |
| 1838 | return eHAL_STATUS_SUCCESS; |
| 1839 | } |
| 1840 | |
| 1841 | /* --------------------------------------------------------------------------- |
| 1842 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1843 | \fn csrNeighborRoamCreateChanListFromNeighborReport |
| 1844 | |
| 1845 | \brief This function is invoked when neighbor report is received for the |
| 1846 | neighbor request. Based on the channels present in the neighbor report, |
| 1847 | it generates channel list which will be used in REPORT_SCAN state to |
| 1848 | scan for these neighbor APs |
| 1849 | |
| 1850 | \param pMac - The handle returned by macOpen. |
| 1851 | |
| 1852 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 1853 | |
| 1854 | ---------------------------------------------------------------------------*/ |
| 1855 | VOS_STATUS csrNeighborRoamCreateChanListFromNeighborReport(tpAniSirGlobal pMac) |
| 1856 | { |
| 1857 | tpRrmNeighborReportDesc pNeighborBssDesc; |
| 1858 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 1859 | tANI_U8 numChannels = 0, i = 0; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1860 | tANI_U8 channelList[MAX_BSS_IN_NEIGHBOR_RPT]; |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 1861 | #if 0 |
| 1862 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 1863 | #endif |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1864 | |
| 1865 | /* This should always start from 0 whenever we create a channel list out of neighbor AP list */ |
| 1866 | pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport = 0; |
| 1867 | |
| 1868 | pNeighborBssDesc = smeRrmGetFirstBssEntryFromNeighborCache(pMac); |
| 1869 | |
| 1870 | while (pNeighborBssDesc) |
| 1871 | { |
| 1872 | if (pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport >= MAX_BSS_IN_NEIGHBOR_RPT) break; |
| 1873 | |
| 1874 | /* Update the neighbor BSS Info in the 11r FT Roam Info */ |
| 1875 | pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo[pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport].channelNum = |
| 1876 | pNeighborBssDesc->pNeighborBssDescription->channel; |
| 1877 | pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo[pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport].neighborScore = |
| 1878 | (tANI_U8)pNeighborBssDesc->roamScore; |
| 1879 | vos_mem_copy(pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo[pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport].neighborBssId, |
| 1880 | pNeighborBssDesc->pNeighborBssDescription->bssId, sizeof(tSirMacAddr)); |
| 1881 | pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport++; |
| 1882 | |
| 1883 | /* Saving the channel list non-redundantly */ |
| 1884 | if (numChannels > 0) |
| 1885 | { |
| 1886 | for (i = 0; i < numChannels; i++) |
| 1887 | { |
| 1888 | if (pNeighborBssDesc->pNeighborBssDescription->channel == channelList[i]) |
| 1889 | break; |
| 1890 | } |
| 1891 | |
| 1892 | } |
| 1893 | if (i == numChannels) |
| 1894 | { |
| 1895 | if (pNeighborBssDesc->pNeighborBssDescription->channel) |
| 1896 | { |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1897 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| 1898 | "%s: [INFOLOG] Adding %d to Neighbor channel list\n", __func__, |
| 1899 | pNeighborBssDesc->pNeighborBssDescription->channel); |
| 1900 | channelList[numChannels] = pNeighborBssDesc->pNeighborBssDescription->channel; |
| 1901 | numChannels++; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1902 | } |
| 1903 | } |
| 1904 | |
| 1905 | pNeighborBssDesc = smeRrmGetNextBssEntryFromNeighborCache(pMac, pNeighborBssDesc); |
| 1906 | } |
| 1907 | |
| 1908 | if (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList) |
| 1909 | { |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 1910 | #if 0 |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1911 | // Before we free the existing channel list for a safety net make sure |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 1912 | // we have a union of the IAPP and the already existing list. |
| 1913 | status = csrNeighborRoamMergeChannelLists( |
| 1914 | pMac, |
| 1915 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList, |
| 1916 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels, |
| 1917 | channelList, |
| 1918 | numChannels, |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 1919 | &numChannels ); |
| 1920 | #endif |
| 1921 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1922 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 1923 | } |
| 1924 | |
| 1925 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 1926 | /* Store the obtained channel list to the Neighbor Control data structure */ |
| 1927 | if (numChannels) |
| 1928 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = vos_mem_malloc((numChannels) * sizeof(tANI_U8)); |
| 1929 | if (NULL == pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList) |
| 1930 | { |
| 1931 | smsLog(pMac, LOGE, FL("Memory allocation for Channel list failed.. TL event ignored")); |
| 1932 | return VOS_STATUS_E_RESOURCES; |
| 1933 | } |
| 1934 | |
| 1935 | vos_mem_copy(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList, |
| 1936 | channelList, (numChannels) * sizeof(tANI_U8)); |
| 1937 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = numChannels; |
| 1938 | if (numChannels) |
| 1939 | { |
| 1940 | smsLog(pMac, LOG1, FL("IAPP Neighbor list callback received as expected in state %d."), |
| 1941 | pNeighborRoamInfo->neighborRoamState); |
| 1942 | pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_TRUE; |
| 1943 | } |
| 1944 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex = 0; |
| 1945 | pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_TRUE; |
| 1946 | |
| 1947 | return VOS_STATUS_SUCCESS; |
| 1948 | } |
| 1949 | |
| 1950 | /* --------------------------------------------------------------------------- |
| 1951 | |
| 1952 | \fn csrNeighborRoamRRMNeighborReportResult |
| 1953 | |
| 1954 | \brief This function is the neighbor report callback that will be invoked by |
| 1955 | SME RRM on receiving a neighbor report or of neighbor report is not |
| 1956 | received after timeout. On receiving a valid report, it generates a |
| 1957 | channel list from the neighbor report and starts the |
| 1958 | neighbor scan timer |
| 1959 | |
| 1960 | \param context - The handle returned by macOpen. |
| 1961 | vosStatus - Status of the callback(SUCCESS/FAILURE) |
| 1962 | |
| 1963 | \return VOID |
| 1964 | |
| 1965 | ---------------------------------------------------------------------------*/ |
| 1966 | void csrNeighborRoamRRMNeighborReportResult(void *context, VOS_STATUS vosStatus) |
| 1967 | { |
| 1968 | tpAniSirGlobal pMac = PMAC_STRUCT(context); |
| 1969 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1970 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 1971 | |
| 1972 | smsLog(pMac, LOG1, FL("Neighbor report result callback with status = %d\n"), vosStatus); |
| 1973 | switch (pNeighborRoamInfo->neighborRoamState) |
| 1974 | { |
| 1975 | case eCSR_NEIGHBOR_ROAM_STATE_REPORT_QUERY: |
| 1976 | /* Reset the report pending variable */ |
| 1977 | pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_FALSE; |
| 1978 | if (VOS_STATUS_SUCCESS == vosStatus) |
| 1979 | { |
| 1980 | /* Need to create channel list based on the neighbor AP list and transition to REPORT_SCAN state */ |
| 1981 | vosStatus = csrNeighborRoamCreateChanListFromNeighborReport(pMac); |
| 1982 | if (VOS_STATUS_SUCCESS == vosStatus) |
| 1983 | { |
| 1984 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Channel List created from Neighbor report, Transitioning to NEIGHBOR_SCAN state\n")); |
| 1985 | } |
| 1986 | |
| 1987 | /* We are gonna scan now. Remember the time stamp to filter out results only after this timestamp */ |
| 1988 | pNeighborRoamInfo->scanRequestTimeStamp = (tANI_TIMESTAMP)palGetTickCount(pMac->hHdd); |
| 1989 | |
| 1990 | /* Now ready for neighbor scan based on the channel list created */ |
| 1991 | /* Start Neighbor scan timer now. Multiplication by PAL_TIMER_TO_MS_UNIT is to convert ms to us which is |
| 1992 | what palTimerStart expects */ |
| 1993 | status = palTimerStart(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer, |
| 1994 | pNeighborRoamInfo->cfgParams.neighborScanPeriod * PAL_TIMER_TO_MS_UNIT, |
| 1995 | eANI_BOOLEAN_FALSE); |
| 1996 | if (eHAL_STATUS_SUCCESS != status) |
| 1997 | { |
| 1998 | /* Timer start failed.. Should we ASSERT here??? */ |
| 1999 | smsLog(pMac, LOGE, FL("PAL Timer start for neighbor scan timer failed, status = %d, Ignoring state transition"), status); |
| 2000 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 2001 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 2002 | return; |
| 2003 | } |
| 2004 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0; |
| 2005 | /* Neighbor scan timer started. Transition to REPORT_SCAN state */ |
| 2006 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN) |
| 2007 | } |
| 2008 | else |
| 2009 | { |
| 2010 | /* Neighbor report timeout happened in SME RRM. We can try sending more neighbor requests until we |
| 2011 | reach the maxNeighborRetries or receiving a successful neighbor response */ |
| 2012 | smsLog(pMac, LOGE, FL("Neighbor report result failed after %d retries, MAX RETRIES = %d\n"), |
| 2013 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum, pNeighborRoamInfo->cfgParams.maxNeighborRetries); |
| 2014 | if (pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum >= |
| 2015 | pNeighborRoamInfo->cfgParams.maxNeighborRetries) |
| 2016 | { |
| 2017 | smsLog(pMac, LOGE, FL("Bailing out to CFG Channel list scan.. \n")); |
| 2018 | vosStatus = csrNeighborRoamTransitToCFGChanScan(pMac); |
| 2019 | if (VOS_STATUS_SUCCESS != vosStatus) |
| 2020 | { |
| 2021 | smsLog(pMac, LOGE, FL("Transit to CFG Channel list scan state failed with status %d \n"), vosStatus); |
| 2022 | return; |
| 2023 | } |
| 2024 | /* We transitioned to different state now. Reset the Neighbor report retry count */ |
| 2025 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0; |
| 2026 | } |
| 2027 | else |
| 2028 | { |
| 2029 | vosStatus = csrNeighborRoamIssueNeighborRptRequest(pMac); |
| 2030 | if (VOS_STATUS_SUCCESS != vosStatus) |
| 2031 | { |
| 2032 | smsLog(pMac, LOGE, FL("Neighbor report request failed. status = %d\n"), vosStatus); |
| 2033 | return; |
| 2034 | } |
| 2035 | pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_TRUE; |
| 2036 | /* Increment the neighbor report retry count after sending the neighbor request successfully */ |
| 2037 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum++; |
| 2038 | } |
| 2039 | } |
| 2040 | break; |
| 2041 | default: |
| 2042 | smsLog(pMac, LOGE, FL("Neighbor result callback not expected in state %d, Ignoring.."), pNeighborRoamInfo->neighborRoamState); |
| 2043 | break; |
| 2044 | } |
| 2045 | return; |
| 2046 | } |
| 2047 | #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| 2048 | |
| 2049 | |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2050 | #ifdef FEATURE_WLAN_LFR |
| 2051 | tANI_BOOLEAN csrNeighborRoamIsSsidCandidateMatch( |
| 2052 | tpAniSirGlobal pMac, |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2053 | tDot11fBeaconIEs *pIes) |
| 2054 | { |
| 2055 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2056 | tANI_U8 sessionId = (tANI_U8)pNeighborRoamInfo->csrSessionId; |
| 2057 | tCsrRoamConnectedProfile *pCurProfile; |
| 2058 | tANI_BOOLEAN fMatch = FALSE; |
| 2059 | |
| 2060 | if( !(pMac->roam.roamSession |
| 2061 | && CSR_IS_SESSION_VALID(pMac, sessionId))) |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2062 | return TRUE; // Treat missing information as a match for everything. |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2063 | |
| 2064 | pCurProfile = &pMac->roam.roamSession[sessionId].connectedProfile; |
| 2065 | |
| 2066 | if( !pCurProfile) |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2067 | return TRUE; // Treat missing information as a match for everything. |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2068 | |
| 2069 | if( pIes ) |
| 2070 | { |
| 2071 | if(pIes->SSID.present) |
| 2072 | { |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2073 | fMatch = csrIsSsidMatch( pMac, (void *)pCurProfile->SSID.ssId, pCurProfile->SSID.length, |
| 2074 | pIes->SSID.ssid, pIes->SSID.num_ssid, |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2075 | eANI_BOOLEAN_TRUE ); // Treat a missing SSID as a non-match. |
| 2076 | // Return the result of the match operation |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2077 | return fMatch; |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2078 | } else |
| 2079 | return FALSE; // Treat a missing SSID as a non-match. |
| 2080 | } else |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2081 | return FALSE; // Again, treat missing SSID information as a non-match. |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2082 | } |
| 2083 | |
| 2084 | /* --------------------------------------------------------------------------- |
| 2085 | |
| 2086 | \fn csrNeighborRoamReorderChannelList |
| 2087 | |
| 2088 | \brief This function is used to reorder the channel list used for the background |
| 2089 | scan. It uses the information learned from previous scans to re-order the |
| 2090 | scan channel list to "favor" the "occupied channels". The actual algorithm |
| 2091 | is to scan the current set of "occupied channels" first, for every BG scan, |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2092 | followed by a "chunk" of the remaining list of "valid channels". |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2093 | |
| 2094 | \param pMac - The handle returned by macOpen. |
| 2095 | \param pInputChannelList - The default channels list. |
| 2096 | \param numOfChannels - The number of channels in the default channels list. |
| 2097 | \param pOutputChannelList - The place to put the "re-ordered" channel list. |
| 2098 | \param pOutputNumOfChannels - The number of channels in the "re-ordered" channel list. |
| 2099 | |
| 2100 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2101 | |
| 2102 | ---------------------------------------------------------------------------*/ |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2103 | VOS_STATUS csrNeighborRoamReorderChannelList( |
| 2104 | tpAniSirGlobal pMac, |
| 2105 | tANI_U8 *pInputChannelList, |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2106 | int numOfChannels, |
| 2107 | tANI_U8 *pOutputChannelList, |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2108 | int *pOutputNumOfChannels |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2109 | ) |
| 2110 | { |
| 2111 | int i = 0; |
| 2112 | int j = 0; |
| 2113 | static int index = 0; |
| 2114 | int outputNumOfChannels = 0; // Clear the output number of channels |
| 2115 | tANI_U8 numOccupiedChannels = pMac->scan.occupiedChannels.numChannels; |
| 2116 | tANI_U8 *pOccupiedChannelList = pMac->scan.occupiedChannels.channelList; |
| 2117 | |
| 2118 | |
| 2119 | // Copy over the "occupied channels" at the FRONT of pOutputChannelList. |
| 2120 | for (i = 0; i < numOccupiedChannels; i++) |
| 2121 | { |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2122 | if (pOccupiedChannelList[i] != 0) |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2123 | { |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2124 | pOutputChannelList[i] = pOccupiedChannelList[i]; |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2125 | outputNumOfChannels++; |
| 2126 | } |
| 2127 | } |
| 2128 | |
| 2129 | // Copy over one "chunk" of channels from the "rest of the channels"...append them to the END of pOutputChannelList. |
| 2130 | for (j = 0; j < CSR_BG_SCAN_VALID_CHANNEL_LIST_CHUNK_SIZE; j++) |
| 2131 | { |
Madan Mohan Koyyalamudi | aae6d47 | 2012-10-05 15:01:32 -0700 | [diff] [blame] | 2132 | if (!csrIsChannelPresentInList(pOccupiedChannelList, numOccupiedChannels, pInputChannelList[(j+index)%numOfChannels])) |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2133 | { |
Madan Mohan Koyyalamudi | aae6d47 | 2012-10-05 15:01:32 -0700 | [diff] [blame] | 2134 | pOutputChannelList[i] = pInputChannelList[(j+index)%numOfChannels]; |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2135 | i++; |
| 2136 | outputNumOfChannels++; |
| 2137 | } |
| 2138 | } |
| 2139 | |
| 2140 | //Let's update the index...at which we start retrieving the next chunk |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2141 | index = (index + CSR_BG_SCAN_VALID_CHANNEL_LIST_CHUNK_SIZE) % numOfChannels; |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2142 | |
| 2143 | //VOS_ASSERT(numOfChannels == i); |
| 2144 | smsLog(pMac, LOGE, FL("numOfChannels in the default channels list=%d. Number in the final list=%d."), numOfChannels, i); |
| 2145 | |
| 2146 | // Return the number of channels |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2147 | *pOutputNumOfChannels = outputNumOfChannels; |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2148 | |
| 2149 | return eHAL_STATUS_SUCCESS; |
| 2150 | } |
| 2151 | #endif /* FEATURE_WLAN_LFR */ |
| 2152 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2153 | /* --------------------------------------------------------------------------- |
| 2154 | |
| 2155 | \fn csrNeighborRoamTransitToCFGChanScan |
| 2156 | |
| 2157 | \brief This function is called whenever there is a transition to CFG chan scan |
| 2158 | state from any state. It frees up the current channel list and allocates |
| 2159 | a new memory for the channels received from CFG item. It then starts the |
| 2160 | neighbor scan timer to perform the scan on each channel one by one |
| 2161 | |
| 2162 | \param pMac - The handle returned by macOpen. |
| 2163 | |
| 2164 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2165 | |
| 2166 | ---------------------------------------------------------------------------*/ |
| 2167 | VOS_STATUS csrNeighborRoamTransitToCFGChanScan(tpAniSirGlobal pMac) |
| 2168 | { |
| 2169 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2170 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 2171 | int i = 0; |
| 2172 | int numOfChannels = 0; |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2173 | tANI_U8 channelList[WNI_CFG_VALID_CHANNEL_LIST_LEN]; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2174 | |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 2175 | if ( |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2176 | #ifdef FEATURE_WLAN_CCX |
| 2177 | ((pNeighborRoamInfo->isCCXAssoc) && |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 2178 | (pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived == eANI_BOOLEAN_FALSE)) || |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2179 | (pNeighborRoamInfo->isCCXAssoc == eANI_BOOLEAN_FALSE) || |
| 2180 | #endif // CCX |
| 2181 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels == 0) |
| 2182 | |
| 2183 | { |
| 2184 | smsLog(pMac, LOGW, FL("Falling back to CFG channel list")); |
| 2185 | |
| 2186 | |
| 2187 | /* Free up the channel list and allocate a new memory. This is because we dont know how much |
| 2188 | was allocated last time. If we directly copy more number of bytes than allocated earlier, this might |
| 2189 | result in memory corruption */ |
| 2190 | if (NULL != pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList) |
| 2191 | { |
| 2192 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 2193 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 2194 | } |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2195 | VOS_ASSERT( pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList == NULL); |
| 2196 | |
| 2197 | // Now obtain the contents for "channelList" (the "default valid channel list") from EITHER |
| 2198 | // the gNeighborScanChannelList in "cfg.ini", OR the actual "valid channel list" information formed by CSR. |
| 2199 | if (0 != pNeighborRoamInfo->cfgParams.channelInfo.numOfChannels) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2200 | { |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2201 | // Copy the "default valid channel list" (channelList) from the gNeighborScanChannelList in "cfg.ini". |
| 2202 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, "Using the channel list from cfg.ini"); |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2203 | status = csrNeighborRoamMergeChannelLists( |
| 2204 | pMac, |
| 2205 | pNeighborRoamInfo->cfgParams.channelInfo.ChannelList, |
| 2206 | pNeighborRoamInfo->cfgParams.channelInfo.numOfChannels, |
| 2207 | channelList, |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2208 | 0, //NB: If 0, simply copy the input channel list to the output list. |
| 2209 | &numOfChannels ); |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2210 | } |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2211 | else |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2212 | { |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2213 | /* Get current list of valid channels. */ |
| 2214 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, "Switching to master list of valid channels"); |
| 2215 | numOfChannels = sizeof(pMac->roam.validChannelList); |
| 2216 | if(HAL_STATUS_SUCCESS(csrGetCfgValidChannels(pMac, (tANI_U8 *)pMac->roam.validChannelList, (tANI_U32 *) &numOfChannels))) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2217 | { |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2218 | // Copy the "default valid channel list" (channelList) from the actual "valid channel list" information formed by CSR |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2219 | status = csrNeighborRoamMergeChannelLists( |
| 2220 | pMac, |
| 2221 | (tANI_U8 *)pMac->roam.validChannelList, |
| 2222 | numOfChannels, // The number of channels in the validChannelList |
| 2223 | channelList, |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2224 | 0, //NB: If 0, simply copy the input channel list to the output list. |
| 2225 | &numOfChannels ); // The final number of channels in the output list. Will be numOfChannels |
| 2226 | } |
| 2227 | else |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2228 | { |
| 2229 | smsLog(pMac, LOGE, FL("Could not get valid channel list, TL event ignored")); |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2230 | return VOS_STATUS_E_FAILURE; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2231 | } |
| 2232 | } |
| 2233 | |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2234 | /* At this point, channelList contains our best inputs on the "valid channel list" */ |
| 2235 | |
| 2236 | /* Allocate for the maximum number that might be used */ |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2237 | smsLog(pMac, LOGE, FL("%d channels in the default list. Add %d occupied channels. %d is the MAX scan channel list."), |
| 2238 | numOfChannels, |
| 2239 | CSR_BG_SCAN_OCCUPIED_CHANNEL_LIST_LEN, |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2240 | numOfChannels+CSR_BG_SCAN_OCCUPIED_CHANNEL_LIST_LEN ); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2241 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = numOfChannels; |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2242 | VOS_ASSERT( pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList == NULL); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2243 | if (numOfChannels) |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2244 | { |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2245 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2246 | vos_mem_malloc(numOfChannels+CSR_BG_SCAN_OCCUPIED_CHANNEL_LIST_LEN ); |
| 2247 | } |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2248 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2249 | if (NULL == pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList) |
| 2250 | { |
| 2251 | smsLog(pMac, LOGE, FL("Memory allocation for Channel list failed.. TL event ignored")); |
| 2252 | return VOS_STATUS_E_RESOURCES; |
| 2253 | } |
| 2254 | |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2255 | #ifdef FEATURE_WLAN_LFR |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2256 | /* Since this is a legacy case, copy the channel list from CFG here */ |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2257 | |
| 2258 | status = csrNeighborRoamReorderChannelList( pMac, |
| 2259 | channelList, |
| 2260 | numOfChannels, |
| 2261 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList, |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2262 | &numOfChannels ); |
| 2263 | if (eHAL_STATUS_SUCCESS != status) |
| 2264 | #endif |
| 2265 | { |
| 2266 | /* Re-ordering failed. */ |
| 2267 | smsLog(pMac, LOGE, FL("Cannot re-order scan channel list. (status = %d) Going to use default scan channel list."), status); |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2268 | vos_mem_copy(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList, |
| 2269 | channelList, numOfChannels * sizeof(tANI_U8)); |
| 2270 | } |
Madan Mohan Koyyalamudi | 470d2cf | 2012-09-28 14:43:44 -0700 | [diff] [blame] | 2271 | |
| 2272 | /* Adjust for the actual number that are used */ |
| 2273 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = numOfChannels; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2274 | for (i = 0; i < pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels; i++) |
| 2275 | { |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2276 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, "Channel List from CFG (or scan caching) = %d\n", |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2277 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[i]); |
| 2278 | } |
| 2279 | } |
| 2280 | |
| 2281 | /* We are gonna scan now. Remember the time stamp to filter out results only after this timestamp */ |
| 2282 | pNeighborRoamInfo->scanRequestTimeStamp = (tANI_TIMESTAMP)palGetTickCount(pMac->hHdd); |
| 2283 | |
| 2284 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 2285 | /* Start Neighbor scan timer now. Multiplication by PAL_TIMER_TO_MS_UNIT is to convert ms to us which is |
| 2286 | what palTimerStart expects */ |
| 2287 | status = palTimerStart(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer, |
| 2288 | pNeighborRoamInfo->cfgParams.neighborScanPeriod * PAL_TIMER_TO_MS_UNIT, |
| 2289 | eANI_BOOLEAN_FALSE); |
| 2290 | |
| 2291 | if (eHAL_STATUS_SUCCESS != status) |
| 2292 | { |
| 2293 | /* Timer start failed.. */ |
| 2294 | smsLog(pMac, LOGE, FL("Neighbor scan PAL Timer start failed, status = %d, Ignoring state transition"), status); |
| 2295 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 2296 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 2297 | return VOS_STATUS_E_FAILURE; |
| 2298 | } |
| 2299 | |
| 2300 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex = 0; |
| 2301 | pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_TRUE; |
Madan Mohan Koyyalamudi | 595208a | 2012-10-05 12:48:38 -0700 | [diff] [blame] | 2302 | /* We are about to start a fresh scan cycle, purge results from the past */ |
| 2303 | csrScanFlushResult(pMac); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2304 | |
| 2305 | /* Transition to CFG_CHAN_LIST_SCAN_STATE */ |
| 2306 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN) |
| 2307 | |
| 2308 | return VOS_STATUS_SUCCESS; |
| 2309 | } |
| 2310 | |
| 2311 | /* --------------------------------------------------------------------------- |
| 2312 | |
| 2313 | \fn csrNeighborRoamNeighborLookupUpEvent |
| 2314 | |
| 2315 | \brief This function is called as soon as TL indicates that the current AP's |
| 2316 | RSSI is better than the neighbor lookup threshold. Here, we transition to |
| 2317 | CONNECTED state and reset all the scan parameters |
| 2318 | |
| 2319 | \param pMac - The handle returned by macOpen. |
| 2320 | |
| 2321 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2322 | |
| 2323 | ---------------------------------------------------------------------------*/ |
| 2324 | VOS_STATUS csrNeighborRoamNeighborLookupUpEvent(tpAniSirGlobal pMac) |
| 2325 | { |
| 2326 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2327 | VOS_STATUS vosStatus; |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 2328 | csrNeighborRoamDeregAllRssiIndication(pMac); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2329 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2330 | /* Recheck whether the below check is needed. */ |
| 2331 | if (pNeighborRoamInfo->neighborRoamState != eCSR_NEIGHBOR_ROAM_STATE_CONNECTED) |
| 2332 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CONNECTED) |
Jeff Johnson | e724574 | 2012-09-05 17:12:55 -0700 | [diff] [blame] | 2333 | |
| 2334 | /* Reset all the neighbor roam info control variables. Free all the allocated memory. It is like we are just associated now */ |
| 2335 | csrNeighborRoamResetConnectedStateControlInfo(pMac); |
| 2336 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2337 | |
| 2338 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Registering DOWN event neighbor lookup callback with TL. RSSI = %d,"), pNeighborRoamInfo->currentNeighborLookupThreshold * (-1)); |
| 2339 | /* Register Neighbor Lookup threshold callback with TL for DOWN event now */ |
| 2340 | vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1), |
| 2341 | WLANTL_HO_THRESHOLD_DOWN, |
| 2342 | csrNeighborRoamNeighborLookupDOWNCallback, |
| 2343 | VOS_MODULE_ID_SME, pMac); |
| 2344 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 2345 | { |
| 2346 | //err msg |
| 2347 | smsLog(pMac, LOGW, FL(" Couldn't register csrNeighborRoamNeighborLookupCallback DOWN event with TL: Status = %d\n"), vosStatus); |
| 2348 | } |
| 2349 | |
| 2350 | |
| 2351 | return vosStatus; |
| 2352 | } |
| 2353 | |
| 2354 | /* --------------------------------------------------------------------------- |
| 2355 | |
| 2356 | \fn csrNeighborRoamNeighborLookupDownEvent |
| 2357 | |
| 2358 | \brief This function is called as soon as TL indicates that the current AP's |
| 2359 | RSSI falls below the current eighbor lookup threshold. Here, we transition to |
| 2360 | REPORT_QUERY for 11r association and CFG_CHAN_LIST_SCAN state if the assoc is |
| 2361 | a non-11R association. |
| 2362 | |
| 2363 | \param pMac - The handle returned by macOpen. |
| 2364 | |
| 2365 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2366 | |
| 2367 | ---------------------------------------------------------------------------*/ |
| 2368 | VOS_STATUS csrNeighborRoamNeighborLookupDownEvent(tpAniSirGlobal pMac) |
| 2369 | { |
| 2370 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2371 | VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| 2372 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 2373 | |
| 2374 | switch (pNeighborRoamInfo->neighborRoamState) |
| 2375 | { |
| 2376 | case eCSR_NEIGHBOR_ROAM_STATE_CONNECTED: |
| 2377 | |
| 2378 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering DOWN event neighbor lookup callback with TL. RSSI = %d,"), |
| 2379 | pNeighborRoamInfo->currentNeighborLookupThreshold * (-1)); |
| 2380 | /* De-register Neighbor Lookup threshold callback with TL */ |
| 2381 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1), |
| 2382 | WLANTL_HO_THRESHOLD_DOWN, |
| 2383 | csrNeighborRoamNeighborLookupDOWNCallback, |
| 2384 | VOS_MODULE_ID_SME); |
| 2385 | |
| 2386 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 2387 | { |
| 2388 | //err msg |
Madan Mohan Koyyalamudi | 596e4fb | 2012-10-05 11:39:52 -0700 | [diff] [blame] | 2389 | smsLog(pMac, LOGW, FL(" Couldn't Deregister csrNeighborRoamNeighborLookupCallback DOWN event from TL: Status = %d\n"), vosStatus); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2390 | } |
| 2391 | |
| 2392 | |
| 2393 | #if defined WLAN_FEATURE_VOWIFI_11R && defined WLAN_FEATURE_VOWIFI |
| 2394 | if ((pNeighborRoamInfo->is11rAssoc) && (pMac->rrm.rrmSmeContext.rrmConfig.rrmEnabled)) |
| 2395 | { |
| 2396 | |
| 2397 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("11R Association:Neighbor Lookup Down event received in CONNECTED state")); |
| 2398 | vosStatus = csrNeighborRoamIssueNeighborRptRequest(pMac); |
| 2399 | if (VOS_STATUS_SUCCESS != vosStatus) |
| 2400 | { |
| 2401 | smsLog(pMac, LOGE, FL("Neighbor report request failed. status = %d\n"), vosStatus); |
| 2402 | return vosStatus; |
| 2403 | } |
| 2404 | /* Increment the neighbor report retry count after sending the neighbor request successfully */ |
| 2405 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum++; |
| 2406 | pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_TRUE; |
| 2407 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_QUERY) |
| 2408 | } |
| 2409 | else |
| 2410 | #endif |
| 2411 | { |
| 2412 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Non 11R or CCX Association:Neighbor Lookup Down event received in CONNECTED state")); |
| 2413 | |
| 2414 | vosStatus = csrNeighborRoamTransitToCFGChanScan(pMac); |
| 2415 | if (VOS_STATUS_SUCCESS != vosStatus) |
| 2416 | { |
| 2417 | return vosStatus; |
| 2418 | } |
| 2419 | } |
| 2420 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Registering UP event neighbor lookup callback with TL. RSSI = %d,"), pNeighborRoamInfo->cfgParams.neighborLookupThreshold * (-1)); |
| 2421 | /* Register Neighbor Lookup threshold callback with TL for UP event now */ |
| 2422 | vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->cfgParams.neighborLookupThreshold * (-1), |
| 2423 | WLANTL_HO_THRESHOLD_UP, |
| 2424 | csrNeighborRoamNeighborLookupUPCallback, |
| 2425 | VOS_MODULE_ID_SME, pMac); |
| 2426 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 2427 | { |
| 2428 | //err msg |
| 2429 | smsLog(pMac, LOGW, FL(" Couldn't register csrNeighborRoamNeighborLookupCallback UP event with TL: Status = %d\n"), status); |
| 2430 | } |
| 2431 | break; |
| 2432 | default: |
| 2433 | smsLog(pMac, LOGE, FL("DOWN event received in invalid state %d..Ignoring..."), pNeighborRoamInfo->neighborRoamState); |
| 2434 | break; |
| 2435 | |
| 2436 | } |
| 2437 | return vosStatus; |
| 2438 | } |
| 2439 | |
| 2440 | /* --------------------------------------------------------------------------- |
| 2441 | |
| 2442 | \fn csrNeighborRoamNeighborLookupUPCallback |
| 2443 | |
| 2444 | \brief This function is registered with TL to indicate whenever the RSSI |
| 2445 | gets better than the neighborLookup RSSI Threshold |
| 2446 | |
| 2447 | \param pAdapter - VOS Context |
| 2448 | trafficStatus - UP/DOWN indication from TL |
| 2449 | pUserCtxt - Parameter for callback registered during callback registration. Should be pMac |
| 2450 | |
| 2451 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2452 | |
| 2453 | ---------------------------------------------------------------------------*/ |
| 2454 | VOS_STATUS csrNeighborRoamNeighborLookupUPCallback (v_PVOID_t pAdapter, v_U8_t rssiNotification, |
| 2455 | v_PVOID_t pUserCtxt) |
| 2456 | { |
| 2457 | tpAniSirGlobal pMac = PMAC_STRUCT( pUserCtxt ); |
| 2458 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2459 | VOS_STATUS vosStatus = eHAL_STATUS_SUCCESS; |
| 2460 | |
| 2461 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Neighbor Lookup UP indication callback called with notification %d"), rssiNotification); |
| 2462 | |
| 2463 | if(!csrIsConnStateConnectedInfra(pMac, pNeighborRoamInfo->csrSessionId)) |
| 2464 | { |
| 2465 | smsLog(pMac, LOGW, "Ignoring the indication as we are not connected\n"); |
| 2466 | return VOS_STATUS_SUCCESS; |
| 2467 | } |
| 2468 | |
| 2469 | VOS_ASSERT(WLANTL_HO_THRESHOLD_UP == rssiNotification); |
| 2470 | vosStatus = csrNeighborRoamNeighborLookupUpEvent(pMac); |
| 2471 | return vosStatus; |
| 2472 | } |
| 2473 | |
| 2474 | /* --------------------------------------------------------------------------- |
| 2475 | |
| 2476 | \fn csrNeighborRoamNeighborLookupDOWNCallback |
| 2477 | |
| 2478 | \brief This function is registered with TL to indicate whenever the RSSI |
| 2479 | falls below the current neighborLookup RSSI Threshold |
| 2480 | |
| 2481 | \param pAdapter - VOS Context |
| 2482 | trafficStatus - UP/DOWN indication from TL |
| 2483 | pUserCtxt - Parameter for callback registered during callback registration. Should be pMac |
| 2484 | |
| 2485 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2486 | |
| 2487 | ---------------------------------------------------------------------------*/ |
| 2488 | VOS_STATUS csrNeighborRoamNeighborLookupDOWNCallback (v_PVOID_t pAdapter, v_U8_t rssiNotification, |
| 2489 | v_PVOID_t pUserCtxt) |
| 2490 | { |
| 2491 | tpAniSirGlobal pMac = PMAC_STRUCT( pUserCtxt ); |
| 2492 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2493 | VOS_STATUS vosStatus = eHAL_STATUS_SUCCESS; |
| 2494 | |
| 2495 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Neighbor Lookup DOWN indication callback called with notification %d"), rssiNotification); |
| 2496 | |
| 2497 | if(!csrIsConnStateConnectedInfra(pMac, pNeighborRoamInfo->csrSessionId)) |
| 2498 | { |
| 2499 | smsLog(pMac, LOGW, "Ignoring the indication as we are not connected\n"); |
| 2500 | return VOS_STATUS_SUCCESS; |
| 2501 | } |
| 2502 | |
| 2503 | VOS_ASSERT(WLANTL_HO_THRESHOLD_DOWN == rssiNotification); |
| 2504 | vosStatus = csrNeighborRoamNeighborLookupDownEvent(pMac); |
| 2505 | |
| 2506 | return vosStatus; |
| 2507 | } |
| 2508 | |
| 2509 | #ifdef RSSI_HACK |
| 2510 | extern int dumpCmdRSSI; |
| 2511 | #endif |
| 2512 | |
| 2513 | /* --------------------------------------------------------------------------- |
| 2514 | |
| 2515 | \fn csrNeighborRoamIndicateDisconnect |
| 2516 | |
| 2517 | \brief This function is called by CSR as soon as the station disconnects from |
| 2518 | the AP. This function does the necessary cleanup of neighbor roam data |
| 2519 | structures. Neighbor roam state transitions to INIT state whenever this |
| 2520 | function is called except if the current state is REASSOCIATING |
| 2521 | |
| 2522 | \param pMac - The handle returned by macOpen. |
| 2523 | sessionId - CSR session id that got disconnected |
| 2524 | |
| 2525 | \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2526 | |
| 2527 | ---------------------------------------------------------------------------*/ |
| 2528 | eHalStatus csrNeighborRoamIndicateDisconnect(tpAniSirGlobal pMac, tANI_U8 sessionId) |
| 2529 | { |
| 2530 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2531 | |
Madan Mohan Koyyalamudi | 5ad3dff | 2012-10-21 11:32:02 -0700 | [diff] [blame] | 2532 | smsLog(pMac, LOGE, FL("Disconnect indication on session %d in state %d (sub-state %d)"), |
| 2533 | sessionId, pNeighborRoamInfo->neighborRoamState, |
| 2534 | pMac->roam.curSubState[sessionId]); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2535 | |
| 2536 | #ifdef FEATURE_WLAN_CCX |
| 2537 | { |
| 2538 | tCsrRoamSession *pSession = CSR_GET_SESSION( pMac, sessionId); |
| 2539 | if (pSession->connectedProfile.isCCXAssoc) |
| 2540 | { |
| 2541 | vos_mem_copy(&pSession->prevApSSID, &pSession->connectedProfile.SSID, sizeof(tSirMacSSid)); |
| 2542 | vos_mem_copy(pSession->prevApBssid, pSession->connectedProfile.bssid, sizeof(tSirMacAddr)); |
| 2543 | pSession->prevOpChannel = pSession->connectedProfile.operationChannel; |
| 2544 | pSession->isPrevApInfoValid = TRUE; |
| 2545 | pSession->roamTS1 = vos_timer_get_system_time(); |
| 2546 | |
| 2547 | } |
| 2548 | } |
| 2549 | #endif |
| 2550 | |
| 2551 | #ifdef RSSI_HACK |
| 2552 | dumpCmdRSSI = -40; |
| 2553 | #endif |
| 2554 | switch (pNeighborRoamInfo->neighborRoamState) |
| 2555 | { |
| 2556 | case eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING: |
| 2557 | // Stop scan and neighbor refresh timers. |
| 2558 | // These are indeed not required when we are in reassociating |
| 2559 | // state. |
| 2560 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 2561 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer); |
Madan Mohan Koyyalamudi | 5ad3dff | 2012-10-21 11:32:02 -0700 | [diff] [blame] | 2562 | if (!CSR_IS_ROAM_SUBSTATE_DISASSOC_HO( pMac, sessionId )) { |
| 2563 | /* |
| 2564 | * Disconnect indication during Disassoc Handoff sub-state |
| 2565 | * is received when we are trying to disconnect with the old |
| 2566 | * AP during roam. BUT, if receive a disconnect indication |
| 2567 | * outside of Disassoc Handoff sub-state, then it means that |
| 2568 | * this is a genuine disconnect and we need to clean up. |
| 2569 | * Otherwise, we will be stuck in reassoc state which will |
| 2570 | * in-turn block scans (see csrIsScanAllowed). |
| 2571 | */ |
| 2572 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT); |
| 2573 | } |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2574 | break; |
| 2575 | |
| 2576 | case eCSR_NEIGHBOR_ROAM_STATE_INIT: |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2577 | csrNeighborRoamResetInitStateControlInfo(pMac); |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 2578 | csrNeighborRoamDeregAllRssiIndication(pMac); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2579 | break; |
| 2580 | |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 2581 | case eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN: |
| 2582 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT); |
| 2583 | csrNeighborRoamResetCfgListChanScanControlInfo(pMac); |
| 2584 | csrNeighborRoamDeregAllRssiIndication(pMac); |
| 2585 | break; |
| 2586 | |
| 2587 | case eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE: |
| 2588 | /* Stop pre-auth to reassoc interval timer */ |
| 2589 | palTimerStop(pMac->hHdd, pMac->ft.ftSmeContext.preAuthReassocIntvlTimer); |
Madan Mohan Koyyalamudi | 4f292df | 2012-09-18 17:27:40 -0700 | [diff] [blame] | 2590 | case eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN: |
| 2591 | case eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING: |
| 2592 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT) |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 2593 | csrNeighborRoamResetPreauthControlInfo(pMac); |
Madan Mohan Koyyalamudi | 4f292df | 2012-09-18 17:27:40 -0700 | [diff] [blame] | 2594 | csrNeighborRoamResetReportScanStateControlInfo(pMac); |
Madan Mohan Koyyalamudi | edee8aa | 2012-10-15 15:36:40 -0700 | [diff] [blame] | 2595 | csrNeighborRoamDeregAllRssiIndication(pMac); |
Madan Mohan Koyyalamudi | 4f292df | 2012-09-18 17:27:40 -0700 | [diff] [blame] | 2596 | break; |
| 2597 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2598 | default: |
Madan Mohan Koyyalamudi | 5695b50 | 2012-09-24 14:21:12 -0700 | [diff] [blame] | 2599 | NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("Received disconnect event in state %d"), pNeighborRoamInfo->neighborRoamState); |
| 2600 | NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("Transitioning to INIT state")); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2601 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT) |
Madan Mohan Koyyalamudi | 4f292df | 2012-09-18 17:27:40 -0700 | [diff] [blame] | 2602 | break; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2603 | } |
| 2604 | return eHAL_STATUS_SUCCESS; |
| 2605 | } |
| 2606 | |
| 2607 | /* --------------------------------------------------------------------------- |
| 2608 | |
| 2609 | \fn csrNeighborRoamIndicateConnect |
| 2610 | |
| 2611 | \brief This function is called by CSR as soon as the station connects to an AP. |
| 2612 | This initializes all the necessary data structures related to the |
| 2613 | associated AP and transitions the state to CONNECTED state |
| 2614 | |
| 2615 | \param pMac - The handle returned by macOpen. |
| 2616 | sessionId - CSR session id that got connected |
| 2617 | vosStatus - connect status SUCCESS/FAILURE |
| 2618 | |
| 2619 | \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2620 | |
| 2621 | ---------------------------------------------------------------------------*/ |
| 2622 | eHalStatus csrNeighborRoamIndicateConnect(tpAniSirGlobal pMac, tANI_U8 sessionId, VOS_STATUS vosStatus) |
| 2623 | { |
| 2624 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2625 | eHalStatus status = eHAL_STATUS_SUCCESS; |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 2626 | VOS_STATUS vstatus; |
| 2627 | |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 2628 | #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] | 2629 | int init_ft_flag = FALSE; |
| 2630 | #endif |
| 2631 | |
Madan Mohan Koyyalamudi | 8bdd311 | 2012-09-24 13:55:14 -0700 | [diff] [blame] | 2632 | smsLog(pMac, LOG2, FL("Connect indication received with session id %d in state %d"), sessionId, pNeighborRoamInfo->neighborRoamState); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2633 | |
| 2634 | switch (pNeighborRoamInfo->neighborRoamState) |
| 2635 | { |
| 2636 | case eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING: |
| 2637 | if (VOS_STATUS_SUCCESS != vosStatus) |
| 2638 | { |
| 2639 | /* Just transition the state to INIT state. Rest of the clean up happens when we get next connect indication */ |
| 2640 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT) |
| 2641 | break; |
| 2642 | } |
| 2643 | /* Fall through if the status is SUCCESS */ |
| 2644 | case eCSR_NEIGHBOR_ROAM_STATE_INIT: |
| 2645 | /* Reset all the data structures here */ |
| 2646 | csrNeighborRoamResetInitStateControlInfo(pMac); |
| 2647 | |
| 2648 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CONNECTED) |
| 2649 | |
| 2650 | pNeighborRoamInfo->csrSessionId = sessionId; |
| 2651 | vos_mem_copy(pNeighborRoamInfo->currAPbssid, |
| 2652 | pMac->roam.roamSession[sessionId].connectedProfile.bssid, sizeof(tCsrBssid)); |
| 2653 | pNeighborRoamInfo->currAPoperationChannel = pMac->roam.roamSession[sessionId].connectedProfile.operationChannel; |
| 2654 | pNeighborRoamInfo->neighborScanTimerInfo.pMac = pMac; |
| 2655 | pNeighborRoamInfo->neighborScanTimerInfo.sessionId = sessionId; |
| 2656 | |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 2657 | #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] | 2658 | /* Now we can clear the preauthDone that was saved as we are connected afresh */ |
| 2659 | csrNeighborRoamFreeRoamableBSSList(pMac, &pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthDoneList); |
| 2660 | #endif |
| 2661 | |
| 2662 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 2663 | // Based on the auth scheme tell if we are 11r |
| 2664 | if ( csrIsAuthType11r( pMac->roam.roamSession[sessionId].connectedProfile.AuthType ) ) |
| 2665 | { |
| 2666 | if (pMac->roam.configParam.isFastTransitionEnabled) |
| 2667 | init_ft_flag = TRUE; |
| 2668 | pNeighborRoamInfo->is11rAssoc = eANI_BOOLEAN_TRUE; |
| 2669 | } |
| 2670 | else |
| 2671 | pNeighborRoamInfo->is11rAssoc = eANI_BOOLEAN_FALSE; |
Madan Mohan Koyyalamudi | 8bdd311 | 2012-09-24 13:55:14 -0700 | [diff] [blame] | 2672 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("11rAssoc is = %d"), pNeighborRoamInfo->is11rAssoc); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2673 | #endif |
| 2674 | |
| 2675 | #ifdef FEATURE_WLAN_CCX |
| 2676 | // Based on the auth scheme tell if we are 11r |
| 2677 | if (pMac->roam.roamSession[sessionId].connectedProfile.isCCXAssoc) |
| 2678 | { |
| 2679 | if (pMac->roam.configParam.isFastTransitionEnabled) |
| 2680 | init_ft_flag = TRUE; |
| 2681 | pNeighborRoamInfo->isCCXAssoc = eANI_BOOLEAN_TRUE; |
| 2682 | } |
| 2683 | else |
| 2684 | pNeighborRoamInfo->isCCXAssoc = eANI_BOOLEAN_FALSE; |
Madan Mohan Koyyalamudi | 8bdd311 | 2012-09-24 13:55:14 -0700 | [diff] [blame] | 2685 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("isCCXAssoc is = %d ft = %d"), |
| 2686 | pNeighborRoamInfo->isCCXAssoc, init_ft_flag); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2687 | |
| 2688 | #endif |
| 2689 | |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 2690 | #ifdef FEATURE_WLAN_LFR |
| 2691 | // If "Legacy Fast Roaming" is enabled |
| 2692 | if (csrRoamIsFastRoamEnabled(pMac)) |
| 2693 | { |
| 2694 | init_ft_flag = TRUE; |
| 2695 | } |
| 2696 | #endif |
| 2697 | |
| 2698 | #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] | 2699 | if ( init_ft_flag == TRUE ) |
| 2700 | { |
| 2701 | /* Initialize all the data structures needed for the 11r FT Preauth */ |
| 2702 | pNeighborRoamInfo->FTRoamInfo.preAuthRspWaitTimerInfo.pMac = pMac; |
| 2703 | pNeighborRoamInfo->FTRoamInfo.preAuthRspWaitTimerInfo.sessionId = sessionId; |
| 2704 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0; |
| 2705 | csrNeighborRoamPurgePreauthFailedList(pMac); |
| 2706 | |
| 2707 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Registering neighbor lookup DOWN event with TL, RSSI = %d"), pNeighborRoamInfo->currentNeighborLookupThreshold); |
| 2708 | /* Register Neighbor Lookup threshold callback with TL for DOWN event only */ |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 2709 | vstatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1), |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2710 | WLANTL_HO_THRESHOLD_DOWN, |
| 2711 | csrNeighborRoamNeighborLookupDOWNCallback, |
| 2712 | VOS_MODULE_ID_SME, pMac); |
| 2713 | |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 2714 | if(!VOS_IS_STATUS_SUCCESS(vstatus)) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2715 | { |
| 2716 | //err msg |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 2717 | smsLog(pMac, LOGW, FL(" Couldn't register csrNeighborRoamNeighborLookupDOWNCallback with TL: Status = %d\n"), vstatus); |
| 2718 | status = eHAL_STATUS_FAILURE; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2719 | } |
| 2720 | } |
| 2721 | #endif |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2722 | break; |
| 2723 | default: |
| 2724 | smsLog(pMac, LOGE, FL("Connect event received in invalid state %d..Ignoring..."), pNeighborRoamInfo->neighborRoamState); |
| 2725 | break; |
| 2726 | } |
| 2727 | return status; |
| 2728 | } |
| 2729 | |
| 2730 | |
| 2731 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 2732 | /* --------------------------------------------------------------------------- |
| 2733 | |
| 2734 | \fn csrNeighborRoamPreAuthResponseWaitTimerHandler |
| 2735 | |
| 2736 | \brief If this function is invoked, that means the preauthentication response |
| 2737 | is timed out from the PE. Preauth rsp handler is called with status as |
| 2738 | TIMEOUT |
| 2739 | |
| 2740 | \param context - CSR Timer info which holds pMac and session ID |
| 2741 | |
| 2742 | \return VOID |
| 2743 | |
| 2744 | ---------------------------------------------------------------------------*/ |
| 2745 | void csrNeighborRoamPreAuthResponseWaitTimerHandler(void *context) |
| 2746 | { |
| 2747 | tCsrTimerInfo *pTimerInfo = (tCsrTimerInfo *)context; |
| 2748 | tpAniSirGlobal pMac = (tpAniSirGlobal)pTimerInfo->pMac; |
| 2749 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2750 | |
| 2751 | pNeighborRoamInfo->FTRoamInfo.preauthRspPending = eANI_BOOLEAN_FALSE; |
| 2752 | |
| 2753 | csrNeighborRoamPreauthRspHandler(pMac, VOS_STATUS_E_TIMEOUT); |
| 2754 | } |
| 2755 | |
| 2756 | /* --------------------------------------------------------------------------- |
| 2757 | |
| 2758 | \fn csrNeighborRoamPurgePreauthFailedList |
| 2759 | |
| 2760 | \brief This function purges all the MAC addresses in the pre-auth fail list |
| 2761 | |
| 2762 | \param pMac - The handle returned by macOpen. |
| 2763 | |
| 2764 | \return VOID |
| 2765 | |
| 2766 | ---------------------------------------------------------------------------*/ |
| 2767 | void csrNeighborRoamPurgePreauthFailedList(tpAniSirGlobal pMac) |
| 2768 | { |
| 2769 | tANI_U8 i; |
| 2770 | |
| 2771 | for (i = 0; i < pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthFailList.numMACAddress; i++) |
| 2772 | { |
| 2773 | vos_mem_zero(pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthFailList.macAddress[i], sizeof(tSirMacAddr)); |
| 2774 | } |
| 2775 | pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthFailList.numMACAddress = 0; |
| 2776 | |
| 2777 | return; |
| 2778 | } |
| 2779 | |
| 2780 | /* --------------------------------------------------------------------------- |
| 2781 | |
| 2782 | \fn csrNeighborRoamInit11rAssocInfo |
| 2783 | |
| 2784 | \brief This function initializes 11r related neighbor roam data structures |
| 2785 | |
| 2786 | \param pMac - The handle returned by macOpen. |
| 2787 | |
| 2788 | \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2789 | |
| 2790 | ---------------------------------------------------------------------------*/ |
| 2791 | eHalStatus csrNeighborRoamInit11rAssocInfo(tpAniSirGlobal pMac) |
| 2792 | { |
| 2793 | eHalStatus status; |
| 2794 | tpCsr11rAssocNeighborInfo pFTRoamInfo = &pMac->roam.neighborRoamInfo.FTRoamInfo; |
| 2795 | |
| 2796 | pMac->roam.neighborRoamInfo.is11rAssoc = eANI_BOOLEAN_FALSE; |
| 2797 | pMac->roam.neighborRoamInfo.cfgParams.maxNeighborRetries = pMac->roam.configParam.neighborRoamConfig.nMaxNeighborRetries; |
| 2798 | pFTRoamInfo->neighborReportTimeout = CSR_NEIGHBOR_ROAM_REPORT_QUERY_TIMEOUT; |
| 2799 | pFTRoamInfo->PEPreauthRespTimeout = CSR_NEIGHBOR_ROAM_PREAUTH_RSP_WAIT_MULTIPLIER * pMac->roam.neighborRoamInfo.cfgParams.neighborScanPeriod; |
| 2800 | pFTRoamInfo->neighborRptPending = eANI_BOOLEAN_FALSE; |
| 2801 | pFTRoamInfo->preauthRspPending = eANI_BOOLEAN_FALSE; |
| 2802 | |
| 2803 | pFTRoamInfo->preAuthRspWaitTimerInfo.pMac = pMac; |
| 2804 | pFTRoamInfo->preAuthRspWaitTimerInfo.sessionId = CSR_SESSION_ID_INVALID; |
| 2805 | status = palTimerAlloc(pMac->hHdd, &pFTRoamInfo->preAuthRspWaitTimer, |
| 2806 | csrNeighborRoamPreAuthResponseWaitTimerHandler, (void *)&pFTRoamInfo->preAuthRspWaitTimerInfo); |
| 2807 | |
| 2808 | if (eHAL_STATUS_SUCCESS != status) |
| 2809 | { |
| 2810 | smsLog(pMac, LOGE, FL("Response wait Timer allocation failed")); |
| 2811 | return eHAL_STATUS_RESOURCES; |
| 2812 | } |
| 2813 | |
| 2814 | pMac->roam.neighborRoamInfo.FTRoamInfo.currentNeighborRptRetryNum = 0; |
| 2815 | pMac->roam.neighborRoamInfo.FTRoamInfo.numBssFromNeighborReport = 0; |
| 2816 | vos_mem_zero(pMac->roam.neighborRoamInfo.FTRoamInfo.neighboReportBssInfo, |
| 2817 | sizeof(tCsrNeighborReportBssInfo) * MAX_BSS_IN_NEIGHBOR_RPT); |
| 2818 | |
| 2819 | |
| 2820 | status = csrLLOpen(pMac->hHdd, &pFTRoamInfo->preAuthDoneList); |
| 2821 | if (eHAL_STATUS_SUCCESS != status) |
| 2822 | { |
| 2823 | smsLog(pMac, LOGE, FL("LL Open of preauth done AP List failed")); |
| 2824 | palTimerFree(pMac->hHdd, pFTRoamInfo->preAuthRspWaitTimer); |
| 2825 | return eHAL_STATUS_RESOURCES; |
| 2826 | } |
| 2827 | return status; |
| 2828 | } |
| 2829 | #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| 2830 | |
| 2831 | /* --------------------------------------------------------------------------- |
| 2832 | |
| 2833 | \fn csrNeighborRoamInit |
| 2834 | |
| 2835 | \brief This function initializes neighbor roam data structures |
| 2836 | |
| 2837 | \param pMac - The handle returned by macOpen. |
| 2838 | |
| 2839 | \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2840 | |
| 2841 | ---------------------------------------------------------------------------*/ |
| 2842 | eHalStatus csrNeighborRoamInit(tpAniSirGlobal pMac) |
| 2843 | { |
| 2844 | eHalStatus status; |
| 2845 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2846 | |
| 2847 | pNeighborRoamInfo->neighborRoamState = eCSR_NEIGHBOR_ROAM_STATE_CLOSED; |
| 2848 | pNeighborRoamInfo->prevNeighborRoamState = eCSR_NEIGHBOR_ROAM_STATE_CLOSED; |
| 2849 | pNeighborRoamInfo->csrSessionId = CSR_SESSION_ID_INVALID; |
| 2850 | pNeighborRoamInfo->cfgParams.maxChannelScanTime = pMac->roam.configParam.neighborRoamConfig.nNeighborScanMaxChanTime; |
| 2851 | pNeighborRoamInfo->cfgParams.minChannelScanTime = pMac->roam.configParam.neighborRoamConfig.nNeighborScanMinChanTime; |
| 2852 | pNeighborRoamInfo->cfgParams.maxNeighborRetries = 0; |
| 2853 | pNeighborRoamInfo->cfgParams.neighborLookupThreshold = pMac->roam.configParam.neighborRoamConfig.nNeighborLookupRssiThreshold; |
| 2854 | pNeighborRoamInfo->cfgParams.neighborReassocThreshold = pMac->roam.configParam.neighborRoamConfig.nNeighborReassocRssiThreshold; |
| 2855 | pNeighborRoamInfo->cfgParams.neighborScanPeriod = pMac->roam.configParam.neighborRoamConfig.nNeighborScanTimerPeriod; |
| 2856 | pNeighborRoamInfo->cfgParams.neighborResultsRefreshPeriod = pMac->roam.configParam.neighborRoamConfig.nNeighborResultsRefreshPeriod; |
| 2857 | |
| 2858 | pNeighborRoamInfo->cfgParams.channelInfo.numOfChannels = |
| 2859 | pMac->roam.configParam.neighborRoamConfig.neighborScanChanList.numChannels; |
| 2860 | |
| 2861 | pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = |
| 2862 | vos_mem_malloc(pMac->roam.configParam.neighborRoamConfig.neighborScanChanList.numChannels); |
| 2863 | |
| 2864 | if (NULL == pNeighborRoamInfo->cfgParams.channelInfo.ChannelList) |
| 2865 | { |
| 2866 | smsLog(pMac, LOGE, FL("Memory Allocation for CFG Channel List failed")); |
| 2867 | return eHAL_STATUS_RESOURCES; |
| 2868 | } |
| 2869 | |
| 2870 | /* Update the roam global structure from CFG */ |
| 2871 | palCopyMemory(pMac->hHdd, pNeighborRoamInfo->cfgParams.channelInfo.ChannelList, |
| 2872 | pMac->roam.configParam.neighborRoamConfig.neighborScanChanList.channelList, |
| 2873 | pMac->roam.configParam.neighborRoamConfig.neighborScanChanList.numChannels); |
| 2874 | |
| 2875 | vos_mem_set(pNeighborRoamInfo->currAPbssid, sizeof(tCsrBssid), 0); |
| 2876 | pNeighborRoamInfo->currentNeighborLookupThreshold = pMac->roam.neighborRoamInfo.cfgParams.neighborLookupThreshold; |
Madan Mohan Koyyalamudi | 04039a1 | 2012-10-21 12:24:56 -0700 | [diff] [blame^] | 2877 | pNeighborRoamInfo->currentScanResultsRefreshPeriod = |
| 2878 | NEIGHBOR_SCAN_RESULTS_REFRESH_PERIOD_MIN; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2879 | pNeighborRoamInfo->scanRspPending = eANI_BOOLEAN_FALSE; |
| 2880 | |
| 2881 | pNeighborRoamInfo->neighborScanTimerInfo.pMac = pMac; |
| 2882 | pNeighborRoamInfo->neighborScanTimerInfo.sessionId = CSR_SESSION_ID_INVALID; |
| 2883 | status = palTimerAlloc(pMac->hHdd, &pNeighborRoamInfo->neighborScanTimer, |
| 2884 | csrNeighborRoamNeighborScanTimerCallback, (void *)&pNeighborRoamInfo->neighborScanTimerInfo); |
| 2885 | |
| 2886 | if (eHAL_STATUS_SUCCESS != status) |
| 2887 | { |
| 2888 | smsLog(pMac, LOGE, FL("Response wait Timer allocation failed")); |
| 2889 | vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList); |
| 2890 | pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL; |
| 2891 | return eHAL_STATUS_RESOURCES; |
| 2892 | } |
| 2893 | |
| 2894 | status = palTimerAlloc(pMac->hHdd, &pNeighborRoamInfo->neighborResultsRefreshTimer, |
| 2895 | csrNeighborRoamResultsRefreshTimerCallback, (void *)&pNeighborRoamInfo->neighborScanTimerInfo); |
| 2896 | |
| 2897 | if (eHAL_STATUS_SUCCESS != status) |
| 2898 | { |
| 2899 | smsLog(pMac, LOGE, FL("Response wait Timer allocation failed")); |
| 2900 | smsLog(pMac, LOGE, FL("LL Open of roamable AP List failed")); |
| 2901 | vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList); |
| 2902 | pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL; |
| 2903 | palTimerFree(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 2904 | return eHAL_STATUS_RESOURCES; |
| 2905 | } |
| 2906 | |
| 2907 | status = csrLLOpen(pMac->hHdd, &pNeighborRoamInfo->roamableAPList); |
| 2908 | if (eHAL_STATUS_SUCCESS != status) |
| 2909 | { |
| 2910 | smsLog(pMac, LOGE, FL("LL Open of roamable AP List failed")); |
| 2911 | vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList); |
| 2912 | pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL; |
| 2913 | palTimerFree(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 2914 | palTimerFree(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer); |
| 2915 | return eHAL_STATUS_RESOURCES; |
| 2916 | } |
| 2917 | |
| 2918 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex = CSR_NEIGHBOR_ROAM_INVALID_CHANNEL_INDEX; |
| 2919 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = 0; |
| 2920 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 2921 | pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_FALSE; |
| 2922 | pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_FALSE; |
| 2923 | |
| 2924 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 2925 | status = csrNeighborRoamInit11rAssocInfo(pMac); |
| 2926 | if (eHAL_STATUS_SUCCESS != status) |
| 2927 | { |
| 2928 | smsLog(pMac, LOGE, FL("LL Open of roamable AP List failed")); |
| 2929 | vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList); |
| 2930 | pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL; |
| 2931 | palTimerFree(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 2932 | palTimerFree(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer); |
| 2933 | csrLLClose(&pNeighborRoamInfo->roamableAPList); |
| 2934 | return eHAL_STATUS_RESOURCES; |
| 2935 | } |
| 2936 | #endif |
| 2937 | /* Initialize this with the current tick count */ |
| 2938 | pNeighborRoamInfo->scanRequestTimeStamp = (tANI_TIMESTAMP)palGetTickCount(pMac->hHdd); |
| 2939 | |
| 2940 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT) |
| 2941 | |
| 2942 | return eHAL_STATUS_SUCCESS; |
| 2943 | } |
| 2944 | |
| 2945 | /* --------------------------------------------------------------------------- |
| 2946 | |
| 2947 | \fn csrNeighborRoamClose |
| 2948 | |
| 2949 | \brief This function closes/frees all the neighbor roam data structures |
| 2950 | |
| 2951 | \param pMac - The handle returned by macOpen. |
| 2952 | |
| 2953 | \return VOID |
| 2954 | |
| 2955 | ---------------------------------------------------------------------------*/ |
| 2956 | void csrNeighborRoamClose(tpAniSirGlobal pMac) |
| 2957 | { |
| 2958 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2959 | |
| 2960 | if (eCSR_NEIGHBOR_ROAM_STATE_CLOSED == pNeighborRoamInfo->neighborRoamState) |
| 2961 | { |
Madan Mohan Koyyalamudi | 8b7f1e6 | 2012-10-05 14:56:51 -0700 | [diff] [blame] | 2962 | smsLog(pMac, LOGW, FL("Neighbor Roam Algorithm Already Closed")); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2963 | return; |
| 2964 | } |
| 2965 | |
| 2966 | if (pNeighborRoamInfo->cfgParams.channelInfo.ChannelList) |
| 2967 | vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList); |
| 2968 | |
| 2969 | pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL; |
| 2970 | |
| 2971 | pNeighborRoamInfo->neighborScanTimerInfo.pMac = NULL; |
| 2972 | pNeighborRoamInfo->neighborScanTimerInfo.sessionId = CSR_SESSION_ID_INVALID; |
| 2973 | palTimerFree(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 2974 | palTimerFree(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer); |
| 2975 | |
| 2976 | /* Should free up the nodes in the list before closing the double Linked list */ |
| 2977 | csrNeighborRoamFreeRoamableBSSList(pMac, &pNeighborRoamInfo->roamableAPList); |
| 2978 | csrLLClose(&pNeighborRoamInfo->roamableAPList); |
| 2979 | |
| 2980 | if (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList) |
| 2981 | { |
| 2982 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 2983 | } |
| 2984 | |
| 2985 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 2986 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex = CSR_NEIGHBOR_ROAM_INVALID_CHANNEL_INDEX; |
| 2987 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = 0; |
| 2988 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 2989 | pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_FALSE; |
| 2990 | pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_FALSE; |
| 2991 | |
| 2992 | /* Free the profile.. */ |
| 2993 | csrReleaseProfile(pMac, &pNeighborRoamInfo->csrNeighborRoamProfile); |
| 2994 | |
| 2995 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 2996 | pMac->roam.neighborRoamInfo.FTRoamInfo.currentNeighborRptRetryNum = 0; |
| 2997 | palTimerFree(pMac->hHdd, pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthRspWaitTimer); |
| 2998 | pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthRspWaitTimerInfo.pMac = NULL; |
| 2999 | pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthRspWaitTimerInfo.sessionId = CSR_SESSION_ID_INVALID; |
| 3000 | pMac->roam.neighborRoamInfo.FTRoamInfo.numBssFromNeighborReport = 0; |
| 3001 | vos_mem_zero(pMac->roam.neighborRoamInfo.FTRoamInfo.neighboReportBssInfo, |
| 3002 | sizeof(tCsrNeighborReportBssInfo) * MAX_BSS_IN_NEIGHBOR_RPT); |
| 3003 | csrNeighborRoamFreeRoamableBSSList(pMac, &pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthDoneList); |
| 3004 | csrLLClose(&pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthDoneList); |
| 3005 | #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| 3006 | |
| 3007 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CLOSED) |
| 3008 | |
| 3009 | return; |
| 3010 | } |
| 3011 | |
| 3012 | /* --------------------------------------------------------------------------- |
| 3013 | |
| 3014 | \fn csrNeighborRoamRequestHandoff |
| 3015 | |
| 3016 | \brief This function triggers actual switching from one AP to the new AP. |
| 3017 | It issues disassociate with reason code as Handoff and CSR as a part of |
| 3018 | handling disassoc rsp, issues reassociate to the new AP |
| 3019 | |
| 3020 | \param pMac - The handle returned by macOpen. |
| 3021 | |
| 3022 | \return VOID |
| 3023 | |
| 3024 | ---------------------------------------------------------------------------*/ |
| 3025 | void csrNeighborRoamRequestHandoff(tpAniSirGlobal pMac) |
| 3026 | { |
| 3027 | |
| 3028 | tCsrRoamInfo roamInfo; |
| 3029 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 3030 | tANI_U32 sessionId = pNeighborRoamInfo->csrSessionId; |
| 3031 | tCsrNeighborRoamBSSInfo handoffNode; |
| 3032 | extern void csrRoamRoamingStateDisassocRspProcessor( tpAniSirGlobal pMac, tSirSmeDisassocRsp *pSmeDisassocRsp ); |
| 3033 | tANI_U32 roamId = 0; |
| 3034 | |
| 3035 | if (pMac->roam.neighborRoamInfo.neighborRoamState != eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE) |
| 3036 | { |
| 3037 | smsLog(pMac, LOGE, FL("Roam requested when Neighbor roam is in %d state"), |
| 3038 | pMac->roam.neighborRoamInfo.neighborRoamState); |
| 3039 | return; |
| 3040 | } |
| 3041 | |
| 3042 | vos_mem_zero(&roamInfo, sizeof(tCsrRoamInfo)); |
| 3043 | csrRoamCallCallback(pMac, pNeighborRoamInfo->csrSessionId, &roamInfo, roamId, eCSR_ROAM_FT_START, |
| 3044 | eSIR_SME_SUCCESS); |
| 3045 | |
| 3046 | vos_mem_zero(&roamInfo, sizeof(tCsrRoamInfo)); |
| 3047 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING) |
| 3048 | |
| 3049 | csrNeighborRoamGetHandoffAPInfo(pMac, &handoffNode); |
| 3050 | smsLog(pMac, LOGE, FL("HANDOFF CANDIDATE BSSID %02x:%02x:%02x:%02x:%02x:%02x"), |
| 3051 | handoffNode.pBssDescription->bssId[0], |
| 3052 | handoffNode.pBssDescription->bssId[1], |
| 3053 | handoffNode.pBssDescription->bssId[2], |
| 3054 | handoffNode.pBssDescription->bssId[3], |
| 3055 | handoffNode.pBssDescription->bssId[4], |
| 3056 | handoffNode.pBssDescription->bssId[5]); |
| 3057 | |
| 3058 | /* Free the profile.. Just to make sure we dont leak memory here */ |
| 3059 | csrReleaseProfile(pMac, &pNeighborRoamInfo->csrNeighborRoamProfile); |
| 3060 | /* Create the Handoff AP profile. Copy the currently connected profile and update only the BSSID and channel number |
| 3061 | This should happen before issuing disconnect */ |
| 3062 | csrRoamCopyConnectedProfile(pMac, pNeighborRoamInfo->csrSessionId, &pNeighborRoamInfo->csrNeighborRoamProfile); |
| 3063 | vos_mem_copy(pNeighborRoamInfo->csrNeighborRoamProfile.BSSIDs.bssid, handoffNode.pBssDescription->bssId, sizeof(tSirMacAddr)); |
| 3064 | pNeighborRoamInfo->csrNeighborRoamProfile.ChannelInfo.ChannelList[0] = handoffNode.pBssDescription->channelId; |
| 3065 | |
| 3066 | NEIGHBOR_ROAM_DEBUG(pMac, LOGW, " csrRoamHandoffRequested: disassociating with current AP\n"); |
| 3067 | |
| 3068 | if(!HAL_STATUS_SUCCESS(csrRoamIssueDisassociateCmd(pMac, sessionId, eCSR_DISCONNECT_REASON_HANDOFF))) |
| 3069 | { |
| 3070 | smsLog(pMac, LOGW, "csrRoamHandoffRequested: fail to issue disassociate\n"); |
| 3071 | return; |
| 3072 | } |
| 3073 | |
| 3074 | //notify HDD for handoff, providing the BSSID too |
| 3075 | roamInfo.reasonCode = eCsrRoamReasonBetterAP; |
| 3076 | |
| 3077 | vos_mem_copy(roamInfo.bssid, |
| 3078 | handoffNode.pBssDescription->bssId, |
| 3079 | sizeof( tCsrBssid )); |
| 3080 | |
| 3081 | csrRoamCallCallback(pMac, sessionId, &roamInfo, 0, eCSR_ROAM_ROAMING_START, eCSR_ROAM_RESULT_NONE); |
| 3082 | |
| 3083 | |
| 3084 | return; |
| 3085 | } |
| 3086 | |
| 3087 | /* --------------------------------------------------------------------------- |
| 3088 | |
| 3089 | \fn csrNeighborRoamIsHandoffInProgress |
| 3090 | |
| 3091 | \brief This function returns whether handoff is in progress or not based on |
| 3092 | the current neighbor roam state |
| 3093 | |
| 3094 | \param pMac - The handle returned by macOpen. |
| 3095 | is11rReassoc - Return whether reassoc is of type 802.11r reassoc |
| 3096 | |
| 3097 | \return eANI_BOOLEAN_TRUE if reassoc in progress, eANI_BOOLEAN_FALSE otherwise |
| 3098 | |
| 3099 | ---------------------------------------------------------------------------*/ |
| 3100 | tANI_BOOLEAN csrNeighborRoamIsHandoffInProgress(tpAniSirGlobal pMac) |
| 3101 | { |
| 3102 | if (eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING == pMac->roam.neighborRoamInfo.neighborRoamState) |
| 3103 | return eANI_BOOLEAN_TRUE; |
| 3104 | |
| 3105 | return eANI_BOOLEAN_FALSE; |
| 3106 | } |
| 3107 | |
| 3108 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 3109 | /* --------------------------------------------------------------------------- |
| 3110 | |
| 3111 | \fn csrNeighborRoamIs11rAssoc |
| 3112 | |
| 3113 | \brief This function returns whether the current association is a 11r assoc or not |
| 3114 | |
| 3115 | \param pMac - The handle returned by macOpen. |
| 3116 | |
| 3117 | \return eANI_BOOLEAN_TRUE if current assoc is 11r, eANI_BOOLEAN_FALSE otherwise |
| 3118 | |
| 3119 | ---------------------------------------------------------------------------*/ |
| 3120 | tANI_BOOLEAN csrNeighborRoamIs11rAssoc(tpAniSirGlobal pMac) |
| 3121 | { |
| 3122 | return pMac->roam.neighborRoamInfo.is11rAssoc; |
| 3123 | } |
| 3124 | #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| 3125 | |
| 3126 | |
| 3127 | /* --------------------------------------------------------------------------- |
| 3128 | |
| 3129 | \fn csrNeighborRoamGetHandoffAPInfo |
| 3130 | |
| 3131 | \brief This function returns the best possible AP for handoff. For 11R case, it |
| 3132 | returns the 1st entry from pre-auth done list. For non-11r case, it returns |
| 3133 | the 1st entry from roamable AP list |
| 3134 | |
| 3135 | \param pMac - The handle returned by macOpen. |
| 3136 | pHandoffNode - AP node that is the handoff candidate returned |
| 3137 | |
| 3138 | \return VOID |
| 3139 | |
| 3140 | ---------------------------------------------------------------------------*/ |
| 3141 | void csrNeighborRoamGetHandoffAPInfo(tpAniSirGlobal pMac, tpCsrNeighborRoamBSSInfo pHandoffNode) |
| 3142 | { |
| 3143 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 3144 | tpCsrNeighborRoamBSSInfo pBssNode; |
| 3145 | |
| 3146 | VOS_ASSERT(NULL != pHandoffNode); |
| 3147 | |
| 3148 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 3149 | if (pNeighborRoamInfo->is11rAssoc) |
| 3150 | { |
| 3151 | /* Always the BSS info in the head is the handoff candidate */ |
| 3152 | pBssNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->FTRoamInfo.preAuthDoneList, NULL); |
| 3153 | NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Number of Handoff candidates = %d"), csrLLCount(&pNeighborRoamInfo->FTRoamInfo.preAuthDoneList)); |
| 3154 | } |
| 3155 | else |
| 3156 | #endif |
| 3157 | #ifdef FEATURE_WLAN_CCX |
| 3158 | if (pNeighborRoamInfo->isCCXAssoc) |
| 3159 | { |
| 3160 | /* Always the BSS info in the head is the handoff candidate */ |
| 3161 | pBssNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->FTRoamInfo.preAuthDoneList, NULL); |
| 3162 | NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Number of Handoff candidates = %d"), csrLLCount(&pNeighborRoamInfo->FTRoamInfo.preAuthDoneList)); |
| 3163 | } |
| 3164 | else |
| 3165 | #endif |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 3166 | #ifdef FEATURE_WLAN_LFR |
| 3167 | if (csrRoamIsFastRoamEnabled(pMac)) |
| 3168 | { |
| 3169 | /* Always the BSS info in the head is the handoff candidate */ |
| 3170 | pBssNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->FTRoamInfo.preAuthDoneList, NULL); |
| 3171 | NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Number of Handoff candidates = %d"), csrLLCount(&pNeighborRoamInfo->FTRoamInfo.preAuthDoneList)); |
| 3172 | } |
| 3173 | else |
| 3174 | #endif |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 3175 | { |
| 3176 | pBssNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->roamableAPList, NULL); |
| 3177 | NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Number of Handoff candidates = %d"), csrLLCount(&pNeighborRoamInfo->roamableAPList)); |
| 3178 | } |
| 3179 | vos_mem_copy(pHandoffNode, pBssNode, sizeof(tCsrNeighborRoamBSSInfo)); |
| 3180 | |
| 3181 | return; |
| 3182 | } |
| 3183 | |
| 3184 | /* --------------------------------------------------------------------------- |
| 3185 | \brief This function returns TRUE if preauth is completed |
| 3186 | |
| 3187 | \param pMac - The handle returned by macOpen. |
| 3188 | |
| 3189 | \return boolean |
| 3190 | |
| 3191 | ---------------------------------------------------------------------------*/ |
| 3192 | tANI_BOOLEAN csrNeighborRoamStatePreauthDone(tpAniSirGlobal pMac) |
| 3193 | { |
| 3194 | return (pMac->roam.neighborRoamInfo.neighborRoamState == |
| 3195 | eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE); |
| 3196 | } |
| 3197 | |
| 3198 | /* --------------------------------------------------------------------------- |
| 3199 | \brief In the event that we are associated with AP1 and we have |
| 3200 | completed pre auth with AP2. Then we receive a deauth/disassoc from |
| 3201 | AP1. |
| 3202 | At this point neighbor roam is in pre auth done state, pre auth timer |
| 3203 | is running. We now handle this case by stopping timer and clearing |
| 3204 | the pre-auth state. We basically clear up and just go to disconnected |
| 3205 | state. |
| 3206 | |
| 3207 | \param pMac - The handle returned by macOpen. |
| 3208 | |
| 3209 | \return boolean |
| 3210 | ---------------------------------------------------------------------------*/ |
| 3211 | void csrNeighborRoamTranistionPreauthDoneToDisconnected(tpAniSirGlobal pMac) |
| 3212 | { |
| 3213 | if (pMac->roam.neighborRoamInfo.neighborRoamState != |
| 3214 | eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE) return; |
| 3215 | |
| 3216 | // Stop timer |
| 3217 | palTimerStop(pMac->hHdd, pMac->ft.ftSmeContext.preAuthReassocIntvlTimer); |
| 3218 | |
| 3219 | // Transition to init state |
| 3220 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT) |
| 3221 | } |
| 3222 | |
| 3223 | #endif /* WLAN_FEATURE_NEIGHBOR_ROAMING */ |