| /* |
| * Copyright (c) 2012-2017 The Linux Foundation. All rights reserved. |
| * |
| * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| * |
| * |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all |
| * copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| * PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /* |
| * This file was originally distributed by Qualcomm Atheros, Inc. |
| * under proprietary terms before Copyright ownership was assigned |
| * to the Linux Foundation. |
| */ |
| |
| /**======================================================================== |
| |
| \file wlan_hdd_scan.c |
| |
| \brief WLAN Host Device Driver implementation |
| |
| ========================================================================*/ |
| |
| /**========================================================================= |
| |
| EDIT HISTORY FOR FILE |
| |
| |
| This section contains comments describing changes made to the module. |
| Notice that changes are listed in reverse chronological order. |
| |
| |
| $Header:$ $DateTime: $ $Author: $ |
| |
| |
| when who what, where, why |
| -------- --- -------------------------------------------------------- |
| 04/5/09 Shailender Created module. |
| |
| ==========================================================================*/ |
| /* To extract the Scan results */ |
| |
| /* Add a stream event */ |
| |
| #include <wlan_qct_driver.h> |
| #include <wlan_hdd_includes.h> |
| #include <vos_api.h> |
| #include <palTypes.h> |
| #include <aniGlobal.h> |
| #include <dot11f.h> |
| |
| #include <linux/wireless.h> |
| #include <net/cfg80211.h> |
| #include <vos_sched.h> |
| |
| |
| #define WEXT_CSCAN_HEADER "CSCAN S\x01\x00\x00S\x00" |
| #define WEXT_CSCAN_HEADER_SIZE 12 |
| #define WEXT_CSCAN_SSID_SECTION 'S' |
| #define WEXT_CSCAN_CHANNEL_SECTION 'C' |
| #define WEXT_CSCAN_NPROBE_SECTION 'N' |
| #define WEXT_CSCAN_ACTV_DWELL_SECTION 'A' |
| #define WEXT_CSCAN_PASV_DWELL_SECTION 'P' |
| #define WEXT_CSCAN_HOME_DWELL_SECTION 'H' |
| #define WEXT_CSCAN_TYPE_SECTION 'T' |
| #define WEXT_CSCAN_PENDING_SECTION 'O' |
| #define WEXT_CSCAN_TYPE_DEFAULT 0 |
| #define WEXT_CSCAN_TYPE_PASSIVE 1 |
| #define WEXT_CSCAN_PASV_DWELL_TIME 130 |
| #define WEXT_CSCAN_PASV_DWELL_TIME_DEF 250 |
| #define WEXT_CSCAN_PASV_DWELL_TIME_MAX 3000 |
| #define WEXT_CSCAN_HOME_DWELL_TIME 130 |
| #define MAX_RATES 12 |
| |
| #define WEXT_CSCAN_SCAN_DONE_WAIT_TIME 2000 |
| |
| typedef struct hdd_scan_info{ |
| struct net_device *dev; |
| struct iw_request_info *info; |
| char *start; |
| char *end; |
| } hdd_scan_info_t, *hdd_scan_info_tp; |
| |
| static v_S31_t hdd_TranslateABGRateToMbpsRate(v_U8_t *pFcRate) |
| { |
| |
| /** Slightly more sophisticated processing has to take place here. |
| Basic rates are rounded DOWN. HT rates are rounded UP.*/ |
| return ( (( ((v_S31_t) *pFcRate) & 0x007f) * 1000000) / 2); |
| } |
| |
| |
| static eHalStatus hdd_AddIwStreamEvent(int cmd, int length, char* data, hdd_scan_info_t *pscanInfo, char **last_event, char **current_event ) |
| { |
| struct iw_event event; |
| |
| *last_event = *current_event; |
| vos_mem_zero(&event, sizeof (struct iw_event)); |
| event.cmd = cmd; |
| event.u.data.flags = 1; |
| event.u.data.length = length; |
| *current_event = iwe_stream_add_point (pscanInfo->info,*current_event, pscanInfo->end, &event, data); |
| |
| if(*last_event == *current_event) |
| { |
| /* no space to add event */ |
| hddLog( LOGE, "%s: no space left to add event", __func__); |
| return -E2BIG; /* Error code, may be E2BIG */ |
| } |
| |
| return 0; |
| } |
| |
| /**--------------------------------------------------------------------------- |
| |
| \brief hdd_GetWPARSNIEs() - |
| |
| This function extract the WPA/RSN IE from the Bss descriptor IEs fields |
| |
| \param - ieFields - Pointer to the Bss Descriptor IEs. |
| - ie_length - IE Length. |
| - last_event -Points to the last event. |
| - current_event - Points to the |
| \return - 0 for success, non zero for failure |
| |
| --------------------------------------------------------------------------*/ |
| |
| |
| /* Extract the WPA and/or RSN IEs */ |
| static eHalStatus hdd_GetWPARSNIEs( v_U8_t *ieFields, v_U16_t ie_length, char **last_event, char **current_event, hdd_scan_info_t *pscanInfo ) |
| { |
| v_U8_t eid, elen, *element; |
| v_U16_t tie_length=0; |
| |
| ENTER(); |
| |
| element = ieFields; |
| tie_length = ie_length; |
| |
| while( tie_length > 2 && element != NULL ) |
| { |
| eid = element[0]; |
| elen = element[1]; |
| |
| /*If element length is greater than total remaining ie length, |
| *break the loop*/ |
| if ((elen+2) > tie_length) |
| break; |
| |
| switch(eid) |
| { |
| case DOT11F_EID_WPA: |
| case DOT11F_EID_RSN: |
| #ifdef FEATURE_WLAN_WAPI |
| case DOT11F_EID_WAPI: |
| #endif |
| if(hdd_AddIwStreamEvent( IWEVGENIE, elen+2, (char*)element, pscanInfo, last_event, current_event ) < 0 ) |
| return -E2BIG; |
| break; |
| |
| default: |
| break; |
| } |
| |
| /* Next element */ |
| tie_length -= (2 + elen); |
| element += 2 + elen; |
| } |
| |
| return 0; |
| } |
| |
| /**--------------------------------------------------------------------------- |
| |
| \brief hdd_IndicateScanResult() - |
| |
| This function returns the scan results to the wpa_supplicant |
| |
| \param - scanInfo - Pointer to the scan info structure. |
| - descriptor - Pointer to the Bss Descriptor. |
| |
| \return - 0 for success, non zero for failure |
| |
| --------------------------------------------------------------------------*/ |
| #define MAX_CUSTOM_LEN 64 |
| static eHalStatus hdd_IndicateScanResult(hdd_scan_info_t *scanInfo, tCsrScanResultInfo *scan_result) |
| { |
| hdd_adapter_t *pAdapter = WLAN_HDD_GET_PRIV_PTR(scanInfo->dev) ; |
| tHalHandle hHal = WLAN_HDD_GET_HAL_CTX(pAdapter); |
| tSirBssDescription *descriptor = &scan_result->BssDescriptor; |
| struct iw_event event; |
| char *current_event = scanInfo->start; |
| char *end = scanInfo->end; |
| char *last_event; |
| char *current_pad; |
| v_U16_t ie_length = 0; |
| v_U16_t capabilityInfo; |
| char *modestr; |
| int error; |
| char custom[MAX_CUSTOM_LEN]; |
| char *p; |
| |
| hddLog( LOG1, "hdd_IndicateScanResult " MAC_ADDRESS_STR, |
| MAC_ADDR_ARRAY(descriptor->bssId)); |
| |
| error = 0; |
| last_event = current_event; |
| vos_mem_zero(&event, sizeof (event)); |
| |
| /* BSSID */ |
| event.cmd = SIOCGIWAP; |
| event.u.ap_addr.sa_family = ARPHRD_ETHER; |
| vos_mem_copy (event.u.ap_addr.sa_data, descriptor->bssId, |
| sizeof (descriptor->bssId)); |
| current_event = iwe_stream_add_event(scanInfo->info,current_event, end, |
| &event, IW_EV_ADDR_LEN); |
| |
| if (last_event == current_event) |
| { |
| /* no space to add event */ |
| /* Error code may be E2BIG */ |
| hddLog( LOGE, "hdd_IndicateScanResult: no space for SIOCGIWAP "); |
| return -E2BIG; |
| } |
| |
| last_event = current_event; |
| vos_mem_zero(&event, sizeof (struct iw_event)); |
| |
| /* Protocol Name */ |
| event.cmd = SIOCGIWNAME; |
| |
| switch (descriptor->nwType) |
| { |
| case eSIR_11A_NW_TYPE: |
| modestr = "a"; |
| break; |
| case eSIR_11B_NW_TYPE: |
| modestr = "b"; |
| break; |
| case eSIR_11G_NW_TYPE: |
| modestr = "g"; |
| break; |
| case eSIR_11N_NW_TYPE: |
| modestr = "n"; |
| break; |
| default: |
| hddLog( LOGW, "%s: Unknown network type [%d]", |
| __func__, descriptor->nwType); |
| modestr = "?"; |
| break; |
| } |
| snprintf(event.u.name, IFNAMSIZ, "IEEE 802.11%s", modestr); |
| current_event = iwe_stream_add_event(scanInfo->info,current_event, end, |
| &event, IW_EV_CHAR_LEN); |
| |
| if (last_event == current_event) |
| { /* no space to add event */ |
| hddLog( LOGE, "hdd_IndicateScanResult: no space for SIOCGIWNAME"); |
| /* Error code, may be E2BIG */ |
| return -E2BIG; |
| } |
| |
| last_event = current_event; |
| vos_mem_zero( &event, sizeof (struct iw_event)); |
| |
| /*Freq*/ |
| event.cmd = SIOCGIWFREQ; |
| |
| event.u.freq.m = descriptor->channelId; |
| event.u.freq.e = 0; |
| event.u.freq.i = 0; |
| current_event = iwe_stream_add_event(scanInfo->info,current_event, end, |
| &event, IW_EV_FREQ_LEN); |
| |
| if (last_event == current_event) |
| { /* no space to add event */ |
| hddLog( LOGE, "hdd_IndicateScanResult: no space for SIOCGIWFREQ"); |
| return -E2BIG; |
| } |
| |
| last_event = current_event; |
| vos_mem_zero( &event, sizeof (struct iw_event)); |
| |
| /* BSS Mode */ |
| event.cmd = SIOCGIWMODE; |
| |
| capabilityInfo = descriptor->capabilityInfo; |
| |
| if (SIR_MAC_GET_ESS(capabilityInfo)) |
| { |
| event.u.mode = IW_MODE_MASTER; |
| } |
| else if (SIR_MAC_GET_IBSS(capabilityInfo)) |
| { |
| event.u.mode = IW_MODE_ADHOC; |
| } |
| else |
| { |
| /* neither ESS or IBSS */ |
| event.u.mode = IW_MODE_AUTO; |
| } |
| |
| current_event = iwe_stream_add_event(scanInfo->info,current_event, end, |
| &event, IW_EV_UINT_LEN); |
| |
| if (last_event == current_event) |
| { /* no space to add event */ |
| hddLog( LOGE, "hdd_IndicateScanResult: no space for SIOCGIWMODE"); |
| return -E2BIG; |
| } |
| /* To extract SSID */ |
| ie_length = GET_IE_LEN_IN_BSS( descriptor->length ); |
| |
| if (ie_length > 0) |
| { |
| /* dot11BeaconIEs is a large struct, so we make it static to |
| avoid stack overflow. This API is only invoked via ioctl, |
| so it is serialized by the kernel rtnl_lock and hence does |
| not need to be reentrant */ |
| static tDot11fBeaconIEs dot11BeaconIEs; |
| tDot11fIESSID *pDot11SSID; |
| tDot11fIESuppRates *pDot11SuppRates; |
| tDot11fIEExtSuppRates *pDot11ExtSuppRates; |
| tDot11fIEHTCaps *pDot11IEHTCaps; |
| int numBasicRates = 0; |
| int maxNumRates = 0; |
| |
| pDot11IEHTCaps = NULL; |
| |
| dot11fUnpackBeaconIEs ((tpAniSirGlobal) |
| hHal, (tANI_U8 *) descriptor->ieFields, ie_length, &dot11BeaconIEs); |
| |
| pDot11SSID = &dot11BeaconIEs.SSID; |
| |
| |
| if (pDot11SSID->present ) { |
| last_event = current_event; |
| vos_mem_zero (&event, sizeof (struct iw_event)); |
| |
| event.cmd = SIOCGIWESSID; |
| event.u.data.flags = 1; |
| event.u.data.length = scan_result->ssId.length; |
| current_event = iwe_stream_add_point (scanInfo->info,current_event, end, |
| &event, (char *)scan_result->ssId.ssId); |
| |
| if(last_event == current_event) |
| { /* no space to add event */ |
| hddLog( LOGE, "hdd_IndicateScanResult: no space for SIOCGIWESSID"); |
| return -E2BIG; |
| } |
| } |
| |
| if( hdd_GetWPARSNIEs( ( tANI_U8 *) descriptor->ieFields, ie_length, &last_event, ¤t_event, scanInfo ) < 0 ) |
| { |
| hddLog( LOGE, "hdd_IndicateScanResult: no space for SIOCGIWESSID"); |
| return -E2BIG; |
| } |
| |
| last_event = current_event; |
| current_pad = current_event + IW_EV_LCP_LEN; |
| vos_mem_zero( &event, sizeof (struct iw_event)); |
| |
| /*Rates*/ |
| event.cmd = SIOCGIWRATE; |
| |
| |
| pDot11SuppRates = &dot11BeaconIEs.SuppRates; |
| |
| if (pDot11SuppRates->present ) |
| { |
| int i; |
| |
| numBasicRates = pDot11SuppRates->num_rates; |
| for (i=0; i<pDot11SuppRates->num_rates; i++) |
| { |
| if (0 != (pDot11SuppRates->rates[i] & 0x7F)) |
| { |
| event.u.bitrate.value = hdd_TranslateABGRateToMbpsRate ( |
| &pDot11SuppRates->rates[i]); |
| |
| current_pad = iwe_stream_add_value (scanInfo->info,current_event, |
| current_pad, end, &event, IW_EV_PARAM_LEN); |
| } |
| } |
| |
| } |
| |
| pDot11ExtSuppRates = &dot11BeaconIEs.ExtSuppRates; |
| |
| if (pDot11ExtSuppRates->present ) |
| { |
| int i,no_of_rates; |
| maxNumRates = numBasicRates + pDot11ExtSuppRates->num_rates; |
| |
| /* Check to make sure the total number of rates |
| doesn't exceed IW_MAX_BITRATES */ |
| |
| maxNumRates = VOS_MIN(maxNumRates , IW_MAX_BITRATES); |
| |
| if((maxNumRates - numBasicRates) > MAX_RATES) |
| { |
| no_of_rates = MAX_RATES; |
| hddLog( LOGW, "Accessing array out of bound that array is pDot11ExtSuppRates->rates "); |
| } |
| else |
| { |
| no_of_rates = maxNumRates - numBasicRates; |
| } |
| for ( i=0; i< no_of_rates ; i++ ) |
| { |
| if (0 != (pDot11ExtSuppRates->rates[i] & 0x7F)) |
| { |
| event.u.bitrate.value = hdd_TranslateABGRateToMbpsRate ( |
| &pDot11ExtSuppRates->rates[i]); |
| |
| current_pad = iwe_stream_add_value (scanInfo->info,current_event, |
| current_pad, end, &event, IW_EV_PARAM_LEN); |
| } |
| } |
| } |
| |
| |
| if ((current_pad - current_event) >= IW_EV_LCP_LEN) |
| { |
| current_event = current_pad; |
| } |
| else |
| { |
| if (last_event == current_event) |
| { /* no space to add event */ |
| hddLog( LOGE, "hdd_IndicateScanResult: no space for SIOCGIWRATE"); |
| return -E2BIG; |
| } |
| } |
| |
| last_event = current_event; |
| vos_mem_zero (&event, sizeof (struct iw_event)); |
| |
| |
| event.cmd = SIOCGIWENCODE; |
| |
| if (SIR_MAC_GET_PRIVACY(capabilityInfo)) |
| { |
| event.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; |
| } |
| else |
| { |
| event.u.data.flags = IW_ENCODE_DISABLED; |
| } |
| event.u.data.length = 0; |
| |
| current_event = iwe_stream_add_point(scanInfo->info,current_event, end, &event, (char *)pDot11SSID->ssid); |
| |
| |
| if(last_event == current_event) |
| { /* no space to add event |
| Error code, may be E2BIG */ |
| hddLog( LOGE, "hdd_IndicateScanResult: no space for SIOCGIWENCODE"); |
| return -E2BIG; |
| } |
| } |
| |
| last_event = current_event; |
| vos_mem_zero( &event, sizeof (struct iw_event)); |
| |
| /*RSSI*/ |
| event.cmd = IWEVQUAL; |
| event.u.qual.qual = descriptor->rssi; |
| event.u.qual.noise = descriptor->sinr; |
| |
| event.u.qual.level = VOS_MIN ((descriptor->rssi + descriptor->sinr), 0); |
| |
| event.u.qual.updated = IW_QUAL_ALL_UPDATED; |
| |
| current_event = iwe_stream_add_event(scanInfo->info,current_event, |
| end, &event, IW_EV_QUAL_LEN); |
| |
| if(last_event == current_event) |
| { /* no space to add event */ |
| hddLog( LOGE, "hdd_IndicateScanResult: no space for IWEVQUAL"); |
| return -E2BIG; |
| } |
| |
| |
| /* AGE */ |
| event.cmd = IWEVCUSTOM; |
| p = custom; |
| p += scnprintf(p, MAX_CUSTOM_LEN, " Age: %lu", |
| vos_timer_get_system_time() - descriptor->nReceivedTime); |
| event.u.data.length = p - custom; |
| current_event = iwe_stream_add_point (scanInfo->info,current_event, end, |
| &event, custom); |
| if(last_event == current_event) |
| { /* no space to add event */ |
| hddLog( LOGE, "hdd_IndicateScanResult: no space for IWEVCUSTOM (age)"); |
| return -E2BIG; |
| } |
| |
| scanInfo->start = current_event; |
| |
| return 0; |
| } |
| |
| /**--------------------------------------------------------------------------- |
| |
| \brief hdd_ScanRequestCallback() - |
| |
| The sme module calls this callback function once it finish the scan request |
| and this function notifies the scan complete event to the wpa_supplicant. |
| |
| \param - halHandle - Pointer to the Hal Handle. |
| - pContext - Pointer to the data context. |
| - sessionId - Session identifier |
| - scanId - Scan ID. |
| - status - CSR Status. |
| \return - 0 for success, non zero for failure |
| |
| --------------------------------------------------------------------------*/ |
| |
| static eHalStatus hdd_ScanRequestCallback(tHalHandle halHandle, void *pContext, |
| tANI_U8 sessionId, tANI_U32 scanId, |
| eCsrScanStatus status) |
| { |
| struct net_device *dev = (struct net_device *) pContext; |
| hdd_adapter_t *pAdapter = WLAN_HDD_GET_PRIV_PTR(dev) ; |
| union iwreq_data wrqu; |
| int we_event; |
| char *msg; |
| |
| ENTER(); |
| |
| hddLog(LOGW,"%s called with halHandle = %pK, pContext = %pK, scanID = %d," |
| " returned status = %d", __func__, halHandle, pContext, |
| (int) scanId, (int) status); |
| |
| /* if there is a scan request pending when the wlan driver is unloaded |
| we may be invoked as SME flushes its pending queue. If that is the |
| case, the underlying net_device may have already been destroyed, so |
| do some quick sanity before proceeding */ |
| if (pAdapter->dev != dev) |
| { |
| hddLog(LOGW, "%s: device mismatch %pK vs %pK", |
| __func__, pAdapter->dev, dev); |
| return eHAL_STATUS_SUCCESS; |
| } |
| |
| /* Check the scanId */ |
| if (pAdapter->scan_info.scanId != scanId) |
| { |
| hddLog(LOGW, "%s called with mismatched scanId pHddCtx->scan_info.scanId = %d " |
| "scanId = %d ", __func__, (int) pAdapter->scan_info.scanId, |
| (int) scanId); |
| } |
| |
| /* Scan is no longer pending */ |
| pAdapter->scan_info.mScanPending = VOS_FALSE; |
| |
| // notify any applications that may be interested |
| memset(&wrqu, '\0', sizeof(wrqu)); |
| we_event = SIOCGIWSCAN; |
| msg = NULL; |
| wireless_send_event(dev, we_event, &wrqu, msg); |
| |
| EXIT(); |
| |
| VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_INFO, "%s: exit !!!",__func__); |
| |
| return eHAL_STATUS_SUCCESS; |
| } |
| |
| /** |
| * __iw_set_scan() - set scan request |
| * @dev: Pointer to the net device. |
| * @info: Pointer to the iw_request_info. |
| * @wrqu: Pointer to the iwreq_data. |
| * @extra: Pointer to the data. |
| * |
| * This function process the scan request from the wpa_supplicant |
| * and set the scan request to the SME |
| * |
| * Return: 0 on success, error number otherwise |
| */ |
| static int __iw_set_scan(struct net_device *dev, struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| hdd_adapter_t *pAdapter = WLAN_HDD_GET_PRIV_PTR(dev) ; |
| hdd_context_t *pHddCtx = WLAN_HDD_GET_CTX(pAdapter); |
| hdd_wext_state_t *pwextBuf = WLAN_HDD_GET_WEXT_STATE_PTR(pAdapter); |
| tCsrScanRequest scanRequest; |
| v_U32_t scanId = 0; |
| eHalStatus status = eHAL_STATUS_SUCCESS; |
| struct iw_scan_req *scanReq = (struct iw_scan_req *)extra; |
| hdd_adapter_t *con_sap_adapter; |
| uint16_t con_dfs_ch; |
| int ret; |
| |
| ENTER(); |
| |
| ret = wlan_hdd_validate_context(pHddCtx); |
| if (0 != ret) |
| return ret; |
| |
| /* Block All Scan during DFS operation and send null scan result */ |
| con_sap_adapter = hdd_get_con_sap_adapter(pAdapter, true); |
| if (con_sap_adapter) { |
| con_dfs_ch = con_sap_adapter->sessionCtx.ap.operatingChannel; |
| |
| if (VOS_IS_DFS_CH(con_dfs_ch)) { |
| hddLog(LOGW, "%s:##In DFS Master mode. Scan aborted", __func__); |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| |
| if(pAdapter->scan_info.mScanPending == TRUE) |
| { |
| VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_FATAL, "%s:mScanPending is TRUE !!!",__func__); |
| return eHAL_STATUS_SUCCESS; |
| } |
| |
| vos_mem_zero( &scanRequest, sizeof(scanRequest)); |
| |
| if (NULL != wrqu->data.pointer) |
| { |
| /* set scanType, active or passive */ |
| if ((IW_SCAN_TYPE_ACTIVE == scanReq->scan_type) || |
| (eSIR_ACTIVE_SCAN == pHddCtx->ioctl_scan_mode)) |
| { |
| scanRequest.scanType = eSIR_ACTIVE_SCAN; |
| } |
| else |
| { |
| scanRequest.scanType = eSIR_PASSIVE_SCAN; |
| } |
| |
| /* set bssid using sockaddr from iw_scan_req */ |
| vos_mem_copy(scanRequest.bssid, |
| &scanReq->bssid.sa_data, sizeof(scanRequest.bssid) ); |
| |
| if (wrqu->data.flags & IW_SCAN_THIS_ESSID) { |
| |
| if(scanReq->essid_len && |
| (scanReq->essid_len <= SIR_MAC_MAX_SSID_LENGTH)) { |
| scanRequest.SSIDs.numOfSSIDs = 1; |
| scanRequest.SSIDs.SSIDList =( tCsrSSIDInfo *)vos_mem_malloc(sizeof(tCsrSSIDInfo)); |
| if(scanRequest.SSIDs.SSIDList) { |
| scanRequest.SSIDs.SSIDList->SSID.length = scanReq->essid_len; |
| vos_mem_copy(scanRequest.SSIDs.SSIDList-> SSID.ssId,scanReq->essid,scanReq->essid_len); |
| } |
| else |
| { |
| scanRequest.SSIDs.numOfSSIDs = 0; |
| VOS_TRACE( VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_ERROR, "%s: Unable to allocate memory",__func__); |
| VOS_ASSERT(0); |
| } |
| } |
| else |
| { |
| hddLog(LOGE, FL("Invalid essid length : %d"), scanReq->essid_len); |
| } |
| } |
| |
| /* set min and max channel time */ |
| scanRequest.minChnTime = scanReq->min_channel_time; |
| scanRequest.maxChnTime = scanReq->max_channel_time; |
| |
| } |
| else |
| { |
| if (pHddCtx->ioctl_scan_mode == eSIR_ACTIVE_SCAN) { |
| /* set the scan type to active */ |
| scanRequest.scanType = eSIR_ACTIVE_SCAN; |
| } else { |
| scanRequest.scanType = eSIR_PASSIVE_SCAN; |
| } |
| |
| vos_mem_set( scanRequest.bssid, sizeof( tCsrBssid ), 0xff ); |
| |
| /* set min and max channel time to zero */ |
| scanRequest.minChnTime = 0; |
| scanRequest.maxChnTime = 0; |
| } |
| |
| /* set BSSType to default type */ |
| scanRequest.BSSType = eCSR_BSS_TYPE_ANY; |
| |
| /*Scan all the channels */ |
| scanRequest.ChannelInfo.numOfChannels = 0; |
| |
| scanRequest.ChannelInfo.ChannelList = NULL; |
| |
| /* set requestType to full scan */ |
| scanRequest.requestType = eCSR_SCAN_REQUEST_FULL_SCAN; |
| |
| /* if previous genIE is not NULL, update ScanIE */ |
| if (0 != pwextBuf->genIE.length) |
| { |
| memset( &pAdapter->scan_info.scanAddIE, 0, sizeof(pAdapter->scan_info.scanAddIE) ); |
| memcpy( pAdapter->scan_info.scanAddIE.addIEdata, pwextBuf->genIE.addIEdata, |
| pwextBuf->genIE.length ); |
| pAdapter->scan_info.scanAddIE.length = pwextBuf->genIE.length; |
| |
| pwextBuf->roamProfile.pAddIEScan = pAdapter->scan_info.scanAddIE.addIEdata; |
| pwextBuf->roamProfile.nAddIEScanLength = pAdapter->scan_info.scanAddIE.length; |
| |
| /* clear previous genIE after use it */ |
| memset( &pwextBuf->genIE, 0, sizeof(pwextBuf->genIE) ); |
| } |
| |
| /* push addIEScan in scanRequset if exist */ |
| if (pAdapter->scan_info.scanAddIE.length && |
| (pAdapter->scan_info.scanAddIE.length <= |
| sizeof(pAdapter->scan_info.scanAddIE.addIEdata))) |
| { |
| scanRequest.uIEFieldLen = pAdapter->scan_info.scanAddIE.length; |
| scanRequest.pIEField = pAdapter->scan_info.scanAddIE.addIEdata; |
| } |
| |
| status = sme_ScanRequest((WLAN_HDD_GET_CTX(pAdapter))->hHal, |
| pAdapter->sessionId, &scanRequest, &scanId, |
| &hdd_ScanRequestCallback, dev); |
| if (!HAL_STATUS_SUCCESS(status)) |
| { |
| VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_FATAL, "%s:sme_ScanRequest fail %d!!!",__func__, status); |
| goto error; |
| } |
| |
| pAdapter->scan_info.mScanPending = TRUE; |
| |
| pAdapter->scan_info.scanId = scanId; |
| |
| error: |
| if ((wrqu->data.flags & IW_SCAN_THIS_ESSID) && (scanReq->essid_len)) |
| vos_mem_free(scanRequest.SSIDs.SSIDList); |
| |
| EXIT(); |
| return status; |
| } |
| |
| /** |
| * iw_set_scan() - SSR wrapper for __iw_set_scan |
| * @dev: Pointer to the net device. |
| * @info: Pointer to the iw_request_info. |
| * @wrqu: Pointer to the iwreq_data. |
| * @extra: Pointer to the data. |
| * |
| * Return: 0 on success, error number otherwise |
| */ |
| int iw_set_scan(struct net_device *dev, struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| int ret; |
| |
| vos_ssr_protect(__func__); |
| ret = __iw_set_scan(dev, info, wrqu, extra); |
| vos_ssr_unprotect(__func__); |
| |
| return ret; |
| } |
| |
| /** |
| * __iw_get_scan() - get scan results |
| * @dev: Pointer to the net device. |
| * @info: Pointer to the iw_request_info. |
| * @wrqu: Pointer to the iwreq_data. |
| * @extra: Pointer to the data. |
| * |
| * This function returns the scan results to the wpa_supplicant |
| * |
| * Return: 0 on success, error number otherwise |
| */ |
| static int __iw_get_scan(struct net_device *dev, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| hdd_adapter_t *pAdapter = WLAN_HDD_GET_PRIV_PTR(dev) ; |
| tHalHandle hHal = WLAN_HDD_GET_HAL_CTX(pAdapter); |
| tCsrScanResultInfo *pScanResult; |
| eHalStatus status = eHAL_STATUS_SUCCESS; |
| hdd_scan_info_t scanInfo; |
| tScanResultHandle pResult; |
| int i = 0; |
| hdd_context_t *hdd_ctx; |
| int ret; |
| |
| ENTER(); |
| |
| hdd_ctx = WLAN_HDD_GET_CTX(pAdapter); |
| ret = wlan_hdd_validate_context(hdd_ctx); |
| if (0 != ret) |
| return ret; |
| |
| VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_INFO, "%s: enter buffer length %d!!!", |
| __func__, (wrqu->data.length)?wrqu->data.length:IW_SCAN_MAX_DATA); |
| |
| if (TRUE == pAdapter->scan_info.mScanPending) |
| { |
| VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_FATAL, "%s:mScanPending is TRUE !!!",__func__); |
| return -EAGAIN; |
| } |
| |
| scanInfo.dev = dev; |
| scanInfo.start = extra; |
| scanInfo.info = info; |
| |
| if (0 == wrqu->data.length) |
| { |
| scanInfo.end = extra + IW_SCAN_MAX_DATA; |
| } |
| else |
| { |
| scanInfo.end = extra + wrqu->data.length; |
| } |
| |
| status = sme_ScanGetResult(hHal,pAdapter->sessionId,NULL,&pResult); |
| |
| if (NULL == pResult) |
| { |
| // no scan results |
| hddLog(LOG1,"iw_get_scan: NULL Scan Result "); |
| return 0; |
| } |
| |
| pScanResult = sme_ScanResultGetFirst(hHal, pResult); |
| |
| while (pScanResult) |
| { |
| status = hdd_IndicateScanResult(&scanInfo, pScanResult); |
| if (0 != status) |
| { |
| break; |
| } |
| i++; |
| pScanResult = sme_ScanResultGetNext(hHal, pResult); |
| } |
| |
| sme_ScanResultPurge(hHal, pResult); |
| |
| VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_INFO, "%s: exit total %d BSS reported !!!",__func__, i); |
| EXIT(); |
| return status; |
| } |
| |
| /** |
| * iw_get_scan() - SSR wrapper function for __iw_get_scan |
| * @dev: Pointer to the net device. |
| * @info: Pointer to the iw_request_info. |
| * @wrqu: Pointer to the iwreq_data. |
| * @extra: Pointer to the data. |
| * |
| * Return: 0 on success, error number otherwise |
| */ |
| int iw_get_scan(struct net_device *dev, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| int ret; |
| |
| vos_ssr_protect(__func__); |
| ret = __iw_get_scan(dev, info, wrqu, extra); |
| vos_ssr_unprotect(__func__); |
| |
| return ret; |
| } |
| |
| #if 0 |
| static eHalStatus hdd_CscanRequestCallback(tHalHandle halHandle, void *pContext, |
| tANI_U32 scanId, eCsrScanStatus status) |
| { |
| struct net_device *dev = (struct net_device *) pContext; |
| hdd_adapter_t *pAdapter = WLAN_HDD_GET_PRIV_PTR(dev) ; |
| hdd_wext_state_t *pwextBuf = WLAN_HDD_GET_WEXT_STATE_PTR(pAdapter); |
| union iwreq_data wrqu; |
| int we_event; |
| char *msg; |
| VOS_STATUS vos_status = VOS_STATUS_SUCCESS; |
| ENTER(); |
| |
| hddLog(LOG1,"%s called with halHandle = %pK, pContext = %pK, scanID = %d," |
| " returned status = %d", __func__, halHandle, pContext, |
| (int) scanId, (int) status); |
| |
| /* Check the scanId */ |
| if (pwextBuf->scanId != scanId) |
| { |
| hddLog(LOGW, "%s called with mismatched scanId pWextState->scanId = %d " |
| "scanId = %d ", __func__, (int) pwextBuf->scanId, |
| (int) scanId); |
| } |
| |
| /* Scan is no longer pending */ |
| pwextBuf->mScanPending = VOS_FALSE; |
| |
| // notify any applications that may be interested |
| memset(&wrqu, '\0', sizeof(wrqu)); |
| we_event = SIOCGIWSCAN; |
| msg = NULL; |
| wireless_send_event(dev, we_event, &wrqu, msg); |
| |
| vos_status = vos_event_set(&pwextBuf->vosevent); |
| |
| if (!VOS_IS_STATUS_SUCCESS(vos_status)) |
| { |
| VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_ERROR, ("ERROR: HDD vos_event_set failed!!")); |
| return VOS_STATUS_E_FAILURE; |
| } |
| |
| EXIT(); |
| VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_INFO, "%s: exit !!!",__func__); |
| |
| return eHAL_STATUS_SUCCESS; |
| } |
| #endif |
| |
| int iw_set_cscan(struct net_device *dev, struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| hdd_adapter_t *pAdapter = WLAN_HDD_GET_PRIV_PTR(dev) ; |
| hdd_wext_state_t *pwextBuf = WLAN_HDD_GET_WEXT_STATE_PTR(pAdapter); |
| tCsrScanRequest scanRequest; |
| v_U32_t scanId = 0; |
| eHalStatus status = eHAL_STATUS_SUCCESS; |
| v_U8_t channelIdx; |
| |
| ENTER(); |
| VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_INFO, "%s: enter !!!",__func__); |
| |
| |
| if ((WLAN_HDD_GET_CTX(pAdapter))->isLogpInProgress) |
| { |
| VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_FATAL, "%s:LOGP in Progress. Ignore!!!",__func__); |
| return eHAL_STATUS_SUCCESS; |
| } |
| |
| vos_mem_zero( &scanRequest, sizeof(scanRequest)); |
| if (NULL != wrqu->data.pointer) |
| { |
| char *str_ptr = NULL; |
| tCsrSSIDInfo *SsidInfo = NULL; |
| int num_ssid = 0; |
| int i, j, ssid_start; |
| hdd_scan_pending_option_e scanPendingOption = WEXT_SCAN_PENDING_GIVEUP; |
| |
| str_ptr = extra; |
| |
| i = WEXT_CSCAN_HEADER_SIZE; |
| |
| if( WEXT_CSCAN_PENDING_SECTION == str_ptr[i] ) |
| { |
| scanPendingOption = (hdd_scan_pending_option_e)str_ptr[++i]; |
| ++i; |
| } |
| pAdapter->scan_info.scan_pending_option = scanPendingOption; |
| |
| if(pAdapter->scan_info.mScanPending == TRUE) |
| { |
| hddLog(LOG1,"%s: mScanPending is TRUE",__func__); |
| /* If any scan is pending, just giveup this scan request */ |
| if(WEXT_SCAN_PENDING_GIVEUP == scanPendingOption) |
| { |
| pAdapter->scan_info.waitScanResult = FALSE; |
| return eHAL_STATUS_SUCCESS; |
| } |
| /* If any scan pending, wait till finish current scan, |
| and try this scan request when previous scan finish */ |
| else if(WEXT_SCAN_PENDING_DELAY == scanPendingOption) |
| { |
| pAdapter->scan_info.waitScanResult = TRUE; |
| vos_event_reset(&pAdapter->scan_info.scan_finished_event); |
| if(vos_wait_single_event(&pAdapter->scan_info.scan_finished_event, |
| WEXT_CSCAN_SCAN_DONE_WAIT_TIME)) |
| { |
| hddLog(LOG1,"%s: Previous SCAN does not finished on time",__func__); |
| return eHAL_STATUS_SUCCESS; |
| } |
| } |
| /* Piggyback previous scan result */ |
| else if(WEXT_SCAN_PENDING_PIGGYBACK == scanPendingOption) |
| { |
| pAdapter->scan_info.waitScanResult = TRUE; |
| return eHAL_STATUS_SUCCESS; |
| } |
| } |
| pAdapter->scan_info.waitScanResult = FALSE; |
| |
| /* Check for scan IE */ |
| while( WEXT_CSCAN_SSID_SECTION == str_ptr[i] ) |
| { |
| /* ssid_len */ |
| if(str_ptr[++i] != WEXT_CSCAN_CHANNEL_SECTION) |
| { |
| /* total number of ssid's */ |
| num_ssid++; |
| /* increment length filed */ |
| i += str_ptr[i] + 1; |
| } |
| /* i should be saved and it will be pointing to 'C' */ |
| } |
| |
| VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_INFO, "%s: numSsid %d !!!",__func__, num_ssid); |
| if( num_ssid ) |
| { |
| /* To be fixed in SME and PE: override the number of ssid with 1, |
| * as SME and PE does not handle multiple SSID in scan request |
| * */ |
| scanRequest.SSIDs.numOfSSIDs = num_ssid; |
| /* Allocate num_ssid tCsrSSIDInfo structure */ |
| SsidInfo = scanRequest.SSIDs.SSIDList =( tCsrSSIDInfo *)vos_mem_malloc(num_ssid*sizeof(tCsrSSIDInfo)); |
| if(NULL == scanRequest.SSIDs.SSIDList) { |
| hddLog(VOS_TRACE_LEVEL_ERROR, "memory alloc failed SSIDInfo buffer"); |
| return -ENOMEM; |
| } |
| |
| /* copy all the ssid's and their length */ |
| ssid_start = WEXT_CSCAN_HEADER_SIZE + 1;/* skipping 'S' */ |
| for(j = 0; j < num_ssid; j++) { |
| if( SIR_MAC_MAX_SSID_LENGTH < str_ptr[ssid_start]){ |
| scanRequest.SSIDs.numOfSSIDs -= 1; |
| } else{ |
| /* get the ssid length */ |
| SsidInfo->SSID.length = str_ptr[ssid_start++]; |
| vos_mem_copy(SsidInfo->SSID.ssId, &str_ptr[ssid_start], SsidInfo->SSID.length); |
| hddLog(VOS_TRACE_LEVEL_INFO_HIGH, "SSID number %d: %s", j, SsidInfo->SSID.ssId); |
| } |
| /* skipping length */ |
| ssid_start += str_ptr[ssid_start - 1] + 1; |
| /* Store next ssid info */ |
| SsidInfo++; |
| } |
| } |
| |
| /* Check for Channel IE */ |
| if ( WEXT_CSCAN_CHANNEL_SECTION == str_ptr[i]) |
| { |
| if( str_ptr[++i] == 0 ) |
| { |
| scanRequest.ChannelInfo.numOfChannels = 0; |
| scanRequest.ChannelInfo.ChannelList = NULL; |
| i++; |
| } |
| else { |
| |
| /* increment the counter */ |
| scanRequest.ChannelInfo.numOfChannels = str_ptr[i++]; |
| /* store temp channel list */ |
| /* SME expects 1 byte channel content */ |
| scanRequest.ChannelInfo.ChannelList = vos_mem_malloc(scanRequest.ChannelInfo.numOfChannels * sizeof(v_U8_t)); |
| if(NULL == scanRequest.ChannelInfo.ChannelList) |
| { |
| hddLog(LOGE, "memory alloc failed for channel list creation"); |
| status = -ENOMEM; |
| goto exit_point; |
| } |
| |
| for(channelIdx = 0; channelIdx < scanRequest.ChannelInfo.numOfChannels; channelIdx++) |
| { |
| /* SCAN request from upper layer has 2 bytes channel */ |
| scanRequest.ChannelInfo.ChannelList[channelIdx] = (v_U8_t)str_ptr[i]; |
| i += sizeof(v_U16_t); |
| } |
| } |
| } |
| |
| /* Set default */ |
| scanRequest.scanType = eSIR_ACTIVE_SCAN; |
| scanRequest.minChnTime = 0; |
| scanRequest.maxChnTime = 0; |
| |
| /* Now i is pointing to passive dwell dwell time */ |
| /* 'P',min dwell time, max dwell time */ |
| /* next two offsets contain min and max channel time */ |
| if( WEXT_CSCAN_PASV_DWELL_SECTION == (str_ptr[i]) ) |
| { |
| /* No SSID specified, num_ssid == 0, then start passive scan */ |
| if (!num_ssid || (eSIR_PASSIVE_SCAN == pAdapter->scan_info.scan_mode)) |
| { |
| scanRequest.scanType = eSIR_PASSIVE_SCAN; |
| scanRequest.minChnTime = (v_U8_t)str_ptr[++i];//scanReq->min_channel_time; |
| scanRequest.maxChnTime = (v_U8_t)str_ptr[++i];//scanReq->max_channel_time; |
| i++; |
| } |
| else |
| { |
| i += 3; |
| } |
| } |
| |
| /* H indicates active channel time */ |
| if( WEXT_CSCAN_HOME_DWELL_SECTION == (str_ptr[i]) ) |
| { |
| if (num_ssid || (eSIR_ACTIVE_SCAN == pAdapter->scan_info.scan_mode)) |
| { |
| scanRequest.scanType = eSIR_ACTIVE_SCAN; |
| scanRequest.minChnTime = str_ptr[++i];//scanReq->min_channel_time; |
| scanRequest.maxChnTime = str_ptr[++i];//scanReq->max_channel_time; |
| i++; |
| } |
| else |
| { |
| i +=3; |
| } |
| } |
| scanRequest.BSSType = eCSR_BSS_TYPE_ANY; |
| /* set requestType to full scan */ |
| scanRequest.requestType = eCSR_SCAN_REQUEST_FULL_SCAN; |
| pAdapter->scan_info.mScanPending = TRUE; |
| |
| /* if previous genIE is not NULL, update ScanIE */ |
| if(0 != pwextBuf->genIE.length) |
| { |
| memset( &pAdapter->scan_info.scanAddIE, 0, sizeof(pAdapter->scan_info.scanAddIE) ); |
| memcpy( pAdapter->scan_info.scanAddIE.addIEdata, pwextBuf->genIE.addIEdata, |
| pwextBuf->genIE.length ); |
| pAdapter->scan_info.scanAddIE.length = pwextBuf->genIE.length; |
| |
| pwextBuf->roamProfile.pAddIEScan = pAdapter->scan_info.scanAddIE.addIEdata; |
| pwextBuf->roamProfile.nAddIEScanLength = pAdapter->scan_info.scanAddIE.length; |
| |
| /* clear previous genIE after use it */ |
| memset( &pwextBuf->genIE, 0, sizeof(pwextBuf->genIE) ); |
| } |
| |
| /* push addIEScan in scanRequset if exist */ |
| if (pAdapter->scan_info.scanAddIE.length && |
| (pAdapter->scan_info.scanAddIE.length <= |
| sizeof(pAdapter->scan_info.scanAddIE.addIEdata))) |
| { |
| scanRequest.uIEFieldLen = pAdapter->scan_info.scanAddIE.length; |
| scanRequest.pIEField = pAdapter->scan_info.scanAddIE.addIEdata; |
| } |
| |
| status = sme_ScanRequest((WLAN_HDD_GET_CTX(pAdapter))->hHal, |
| pAdapter->sessionId, &scanRequest, &scanId, |
| &hdd_ScanRequestCallback, dev); |
| if( !HAL_STATUS_SUCCESS(status) ) |
| { |
| VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_FATAL, "%s: SME scan fail status %d !!!",__func__, status); |
| pAdapter->scan_info.mScanPending = FALSE; |
| status = -EINVAL; |
| goto exit_point; |
| } |
| |
| pAdapter->scan_info.scanId = scanId; |
| |
| } //end of data->pointer |
| else { |
| status = -1; |
| } |
| |
| exit_point: |
| |
| /* free ssidlist */ |
| if (scanRequest.SSIDs.SSIDList) |
| { |
| vos_mem_free(scanRequest.SSIDs.SSIDList); |
| } |
| /* free the channel list */ |
| if(scanRequest.ChannelInfo.ChannelList) |
| { |
| vos_mem_free((void*)scanRequest.ChannelInfo.ChannelList); |
| } |
| |
| EXIT(); |
| VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_INFO, "%s: exit !!!",__func__); |
| return status; |
| } |
| |
| /* Abort any MAC scan if in progress */ |
| void hdd_abort_mac_scan(hdd_context_t* pHddCtx, tANI_U8 sessionId, |
| eCsrAbortReason reason) |
| { |
| sme_AbortMacScan(pHddCtx->hHal, sessionId, reason); |
| } |
