Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1 | /* |
Gopichand Nakkala | 92f07d8 | 2013-01-08 21:16:34 -0800 | [diff] [blame] | 2 | * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. |
| 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 | /* |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 22 | * Copyright (c) 2012, The Linux Foundation. All rights reserved. |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 23 | * |
| 24 | * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| 25 | * |
| 26 | * |
| 27 | * Permission to use, copy, modify, and/or distribute this software for |
| 28 | * any purpose with or without fee is hereby granted, provided that the |
| 29 | * above copyright notice and this permission notice appear in all |
| 30 | * copies. |
| 31 | * |
| 32 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| 33 | * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| 34 | * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| 35 | * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| 36 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 37 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 38 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 39 | * PERFORMANCE OF THIS SOFTWARE. |
| 40 | */ |
| 41 | |
| 42 | /* |
| 43 | * |
| 44 | * Airgo Networks, Inc proprietary. All rights reserved. |
| 45 | * This file limProcessBeaconFrame.cc contains the code |
| 46 | * for processing Received Beacon Frame. |
| 47 | * Author: Chandra Modumudi |
| 48 | * Date: 03/01/02 |
| 49 | * History:- |
| 50 | * Date Modified by Modification Information |
| 51 | * -------------------------------------------------------------------- |
| 52 | * |
| 53 | */ |
| 54 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 55 | #include "wniCfgSta.h" |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 56 | #include "aniGlobal.h" |
| 57 | #include "cfgApi.h" |
| 58 | #include "schApi.h" |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 59 | #include "utilsApi.h" |
| 60 | #include "limTypes.h" |
| 61 | #include "limUtils.h" |
| 62 | #include "limAssocUtils.h" |
| 63 | #include "limPropExtsUtils.h" |
| 64 | #include "limSerDesUtils.h" |
| 65 | |
| 66 | /** |
| 67 | * limProcessBeaconFrame |
| 68 | * |
| 69 | *FUNCTION: |
| 70 | * This function is called by limProcessMessageQueue() upon Beacon |
| 71 | * frame reception. |
| 72 | * |
| 73 | *LOGIC: |
| 74 | * |
| 75 | *ASSUMPTIONS: |
| 76 | * |
| 77 | *NOTE: |
| 78 | * 1. Beacons received in 'normal' state in IBSS are handled by |
| 79 | * Beacon Processing module. |
| 80 | * |
| 81 | * @param pMac - Pointer to Global MAC structure |
| 82 | * @param *pRxPacketInfo - A pointer to RX packet info structure |
| 83 | * @return None |
| 84 | */ |
| 85 | |
| 86 | void |
| 87 | limProcessBeaconFrame(tpAniSirGlobal pMac, tANI_U8 *pRxPacketInfo,tpPESession psessionEntry) |
| 88 | { |
| 89 | tpSirMacMgmtHdr pHdr; |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 90 | tSchBeaconStruct *pBeacon; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 91 | |
| 92 | pMac->lim.gLimNumBeaconsRcvd++; |
| 93 | |
| 94 | /* here is it required to increment session specific heartBeat beacon counter */ |
| 95 | |
| 96 | |
| 97 | |
| 98 | pHdr = WDA_GET_RX_MAC_HEADER(pRxPacketInfo); |
| 99 | |
| 100 | |
| 101 | PELOG2(limLog(pMac, LOG2, FL("Received Beacon frame with length=%d from "), |
| 102 | WDA_GET_RX_MPDU_LEN(pRxPacketInfo)); |
| 103 | limPrintMacAddr(pMac, pHdr->sa, LOG2);) |
| 104 | |
| 105 | if (limDeactivateMinChannelTimerDuringScan(pMac) != eSIR_SUCCESS) |
| 106 | return; |
| 107 | |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 108 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 109 | /** |
| 110 | * Expect Beacon only when |
| 111 | * 1. STA is in Scan mode waiting for Beacon/Probe response or |
| 112 | * 2. STA is waiting for Beacon/Probe Respose Frame |
| 113 | * to announce join success. |
| 114 | * 3. STA/AP is in Learn mode |
| 115 | */ |
| 116 | if ((pMac->lim.gLimMlmState == eLIM_MLM_WT_PROBE_RESP_STATE) || |
| 117 | (pMac->lim.gLimMlmState == eLIM_MLM_PASSIVE_SCAN_STATE) || |
| 118 | (pMac->lim.gLimMlmState == eLIM_MLM_LEARN_STATE) || |
| 119 | (psessionEntry->limMlmState == eLIM_MLM_WT_JOIN_BEACON_STATE)) |
| 120 | { |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 121 | if(eHAL_STATUS_SUCCESS != palAllocateMemory(pMac->hHdd, |
| 122 | (void **)&pBeacon, sizeof(tSchBeaconStruct))) |
| 123 | { |
| 124 | limLog(pMac, LOGE, FL("Unable to PAL allocate memory in limProcessBeaconFrame\n") ); |
| 125 | return; |
| 126 | } |
| 127 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 128 | // Parse received Beacon |
| 129 | if (sirConvertBeaconFrame2Struct(pMac, (tANI_U8 *) pRxPacketInfo, |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 130 | pBeacon) != eSIR_SUCCESS) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 131 | { |
| 132 | // Received wrongly formatted/invalid Beacon. |
| 133 | // Ignore it and move on. |
| 134 | limLog(pMac, LOGW, |
| 135 | FL("Received invalid Beacon in state %X\n"), |
| 136 | psessionEntry->limMlmState); |
| 137 | limPrintMlmState(pMac, LOGW, psessionEntry->limMlmState); |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 138 | palFreeMemory(pMac->hHdd, pBeacon); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 139 | return; |
| 140 | } |
| 141 | |
| 142 | |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 143 | MTRACE(macTrace(pMac, TRACE_CODE_RX_MGMT_TSF, 0, pBeacon->timeStamp[0]);) |
| 144 | MTRACE(macTrace(pMac, TRACE_CODE_RX_MGMT_TSF, 0, pBeacon->timeStamp[1]);) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 145 | |
| 146 | |
| 147 | if ((pMac->lim.gLimMlmState == eLIM_MLM_WT_PROBE_RESP_STATE) || |
| 148 | (pMac->lim.gLimMlmState == eLIM_MLM_PASSIVE_SCAN_STATE)) |
| 149 | { |
| 150 | #ifdef WLAN_FEATURE_P2P |
| 151 | //If we are scanning for P2P, only accept probe rsp |
| 152 | if((pMac->lim.gLimHalScanState != eLIM_HAL_SCANNING_STATE) || (NULL == pMac->lim.gpLimMlmScanReq) |
| 153 | || !pMac->lim.gpLimMlmScanReq->p2pSearch ) |
| 154 | #endif |
| 155 | { |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 156 | limCheckAndAddBssDescription(pMac, pBeacon, pRxPacketInfo, |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 157 | ((pMac->lim.gLimHalScanState == eLIM_HAL_SCANNING_STATE) ? eANI_BOOLEAN_TRUE : eANI_BOOLEAN_FALSE), |
| 158 | eANI_BOOLEAN_FALSE); |
| 159 | } |
| 160 | } |
| 161 | else if (pMac->lim.gLimMlmState == eLIM_MLM_LEARN_STATE) |
| 162 | { |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 163 | } |
| 164 | else |
| 165 | { |
| 166 | if( psessionEntry->beacon != NULL ) |
| 167 | { |
| 168 | palFreeMemory(pMac->hHdd, psessionEntry->beacon); |
| 169 | psessionEntry->beacon = NULL; |
| 170 | } |
| 171 | psessionEntry->bcnLen = WDA_GET_RX_PAYLOAD_LEN(pRxPacketInfo); |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 172 | if( (palAllocateMemory(pMac->hHdd, (void**)&psessionEntry->beacon, psessionEntry->bcnLen)) != eHAL_STATUS_SUCCESS) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 173 | { |
| 174 | PELOGE(limLog(pMac, LOGE, FL("Unable to allocate memory to store beacon"));) |
| 175 | } |
| 176 | else |
| 177 | { |
| 178 | //Store the Beacon/ProbeRsp. This is sent to csr/hdd in join cnf response. |
| 179 | palCopyMemory(pMac->hHdd, psessionEntry->beacon, WDA_GET_RX_MPDU_DATA(pRxPacketInfo), psessionEntry->bcnLen); |
| 180 | |
| 181 | } |
| 182 | |
| 183 | // STA in WT_JOIN_BEACON_STATE (IBSS) |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 184 | limCheckAndAnnounceJoinSuccess(pMac, pBeacon, pHdr,psessionEntry); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 185 | } // if (pMac->lim.gLimMlmState == eLIM_MLM_WT_PROBE_RESP_STATE) |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 186 | palFreeMemory(pMac->hHdd, pBeacon); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 187 | } // if ((pMac->lim.gLimMlmState == eLIM_MLM_WT_PROBE_RESP_STATE) || ... |
| 188 | else |
| 189 | { |
| 190 | // Ignore Beacon frame in all other states |
| 191 | if (psessionEntry->limMlmState == eLIM_MLM_JOINED_STATE || |
| 192 | psessionEntry->limMlmState == eLIM_MLM_BSS_STARTED_STATE || |
| 193 | psessionEntry->limMlmState == eLIM_MLM_WT_AUTH_FRAME2_STATE || |
| 194 | psessionEntry->limMlmState == eLIM_MLM_WT_AUTH_FRAME3_STATE || |
| 195 | psessionEntry->limMlmState == eLIM_MLM_WT_AUTH_FRAME4_STATE || |
| 196 | psessionEntry->limMlmState == eLIM_MLM_AUTH_RSP_TIMEOUT_STATE || |
| 197 | psessionEntry->limMlmState == eLIM_MLM_AUTHENTICATED_STATE || |
| 198 | psessionEntry->limMlmState == eLIM_MLM_WT_ASSOC_RSP_STATE || |
| 199 | psessionEntry->limMlmState == eLIM_MLM_WT_REASSOC_RSP_STATE || |
| 200 | psessionEntry->limMlmState == eLIM_MLM_ASSOCIATED_STATE || |
| 201 | psessionEntry->limMlmState == eLIM_MLM_REASSOCIATED_STATE || |
| 202 | psessionEntry->limMlmState == eLIM_MLM_WT_ASSOC_CNF_STATE || |
| 203 | limIsReassocInProgress(pMac,psessionEntry)) { |
| 204 | // nothing unexpected about beacon in these states |
| 205 | pMac->lim.gLimNumBeaconsIgnored++; |
| 206 | } |
| 207 | else |
| 208 | { |
| 209 | PELOG1(limLog(pMac, LOG1, FL("Received Beacon in unexpected state %d\n"), |
| 210 | psessionEntry->limMlmState); |
| 211 | limPrintMlmState(pMac, LOG1, psessionEntry->limMlmState);) |
| 212 | #ifdef WLAN_DEBUG |
| 213 | pMac->lim.gLimUnexpBcnCnt++; |
| 214 | #endif |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | return; |
| 219 | } /*** end limProcessBeaconFrame() ***/ |
| 220 | |
| 221 | |
| 222 | /**--------------------------------------------------------------- |
| 223 | \fn limProcessBeaconFrameNoSession |
| 224 | \brief This function is called by limProcessMessageQueue() |
| 225 | \ upon Beacon reception. |
| 226 | \ |
| 227 | \param pMac |
| 228 | \param *pRxPacketInfo - A pointer to Rx packet info structure |
| 229 | \return None |
| 230 | ------------------------------------------------------------------*/ |
| 231 | void |
| 232 | limProcessBeaconFrameNoSession(tpAniSirGlobal pMac, tANI_U8 *pRxPacketInfo) |
| 233 | { |
| 234 | tpSirMacMgmtHdr pHdr; |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 235 | tSchBeaconStruct *pBeacon; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 236 | |
| 237 | pMac->lim.gLimNumBeaconsRcvd++; |
| 238 | pHdr = WDA_GET_RX_MAC_HEADER(pRxPacketInfo); |
| 239 | |
| 240 | limLog(pMac, LOG2, FL("Received Beacon frame with length=%d from "), |
| 241 | WDA_GET_RX_MPDU_LEN(pRxPacketInfo)); |
| 242 | limPrintMacAddr(pMac, pHdr->sa, LOG2); |
| 243 | |
| 244 | if (limDeactivateMinChannelTimerDuringScan(pMac) != eSIR_SUCCESS) |
| 245 | return; |
| 246 | |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 247 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 248 | /** |
| 249 | * No session has been established. Expect Beacon only when |
| 250 | * 1. STA is in Scan mode waiting for Beacon/Probe response or |
| 251 | * 2. STA/AP is in Learn mode |
| 252 | */ |
| 253 | if ((pMac->lim.gLimMlmState == eLIM_MLM_WT_PROBE_RESP_STATE) || |
| 254 | (pMac->lim.gLimMlmState == eLIM_MLM_PASSIVE_SCAN_STATE) || |
| 255 | (pMac->lim.gLimMlmState == eLIM_MLM_LEARN_STATE)) |
| 256 | { |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 257 | if(eHAL_STATUS_SUCCESS != palAllocateMemory(pMac->hHdd, |
| 258 | (void **)&pBeacon, sizeof(tSchBeaconStruct))) |
| 259 | { |
| 260 | limLog(pMac, LOGE, FL("Unable to PAL allocate memory in limProcessBeaconFrameNoSession\n") ); |
| 261 | return; |
| 262 | } |
| 263 | |
| 264 | if (sirConvertBeaconFrame2Struct(pMac, (tANI_U8 *) pRxPacketInfo, pBeacon) != eSIR_SUCCESS) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 265 | { |
| 266 | // Received wrongly formatted/invalid Beacon. Ignore and move on. |
| 267 | limLog(pMac, LOGW, FL("Received invalid Beacon in global MLM state %X\n"), pMac->lim.gLimMlmState); |
| 268 | limPrintMlmState(pMac, LOGW, pMac->lim.gLimMlmState); |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 269 | palFreeMemory(pMac->hHdd, pBeacon); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 270 | return; |
| 271 | } |
| 272 | |
| 273 | if ( (pMac->lim.gLimMlmState == eLIM_MLM_WT_PROBE_RESP_STATE) || |
| 274 | (pMac->lim.gLimMlmState == eLIM_MLM_PASSIVE_SCAN_STATE) ) |
| 275 | { |
| 276 | #ifdef WLAN_FEATURE_P2P |
| 277 | //If we are scanning for P2P, only accept probe rsp |
| 278 | if((pMac->lim.gLimHalScanState != eLIM_HAL_SCANNING_STATE) || (NULL == pMac->lim.gpLimMlmScanReq) |
| 279 | || !pMac->lim.gpLimMlmScanReq->p2pSearch ) |
| 280 | #endif |
| 281 | { |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 282 | limCheckAndAddBssDescription(pMac, pBeacon, pRxPacketInfo, eANI_BOOLEAN_TRUE, eANI_BOOLEAN_FALSE); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 283 | } |
| 284 | } |
| 285 | else if (pMac->lim.gLimMlmState == eLIM_MLM_LEARN_STATE) |
| 286 | { |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 287 | } // end of eLIM_MLM_LEARN_STATE) |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 288 | palFreeMemory(pMac->hHdd, pBeacon); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 289 | } // end of (eLIM_MLM_WT_PROBE_RESP_STATE) || (eLIM_MLM_PASSIVE_SCAN_STATE) |
| 290 | else |
| 291 | { |
| 292 | limLog(pMac, LOG1, FL("Rcvd Beacon in unexpected MLM state %d\n"), pMac->lim.gLimMlmState); |
| 293 | limPrintMlmState(pMac, LOG1, pMac->lim.gLimMlmState); |
| 294 | #ifdef WLAN_DEBUG |
| 295 | pMac->lim.gLimUnexpBcnCnt++; |
| 296 | #endif |
| 297 | } |
| 298 | |
| 299 | return; |
| 300 | } /*** end limProcessBeaconFrameNoSession() ***/ |
| 301 | |