diff options
Diffstat (limited to 'wl1271/stad/src/Connection_Managment/smeSelect.c')
| -rw-r--r-- | wl1271/stad/src/Connection_Managment/smeSelect.c | 486 |
1 files changed, 0 insertions, 486 deletions
diff --git a/wl1271/stad/src/Connection_Managment/smeSelect.c b/wl1271/stad/src/Connection_Managment/smeSelect.c deleted file mode 100644 index 332d541..0000000 --- a/wl1271/stad/src/Connection_Managment/smeSelect.c +++ /dev/null @@ -1,486 +0,0 @@ -/* - * smeSelect.c - * - * Copyright(c) 1998 - 2010 Texas Instruments. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name Texas Instruments nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** \file smeSelect.c - * \brief SME select function implementation - * - * \see smeSm.h, smeSm.c, sme.c, sme.h, smePrivate.h - */ - - -#define __FILE_ID__ FILE_ID_42 -#include "smePrivate.h" -#include "scanResultTable.h" -#include "rsnApi.h" -#include "siteMgrApi.h" -#include "EvHandler.h" -#include "GenSM.h" -#include "smeSm.h" -#include "tidef.h" - -static TI_BOOL sme_SelectSsidMatch (TI_HANDLE hSme, TSsid *pSiteSsid, TSsid *pDesiredSsid, - ESsidType eDesiredSsidType); -static TI_BOOL sme_SelectBssidMatch (TMacAddr *pSiteBssid, TMacAddr *pDesiredBssid); -static TI_BOOL sme_SelectBssTypeMatch (ScanBssType_e eSiteBssType, ScanBssType_e eDesiredBssType); -static TI_BOOL sme_SelectWscMatch (TI_HANDLE hSme, TSiteEntry *pCurrentSite, - TI_BOOL *pbWscPbAbort, TI_BOOL *pbWscPbApFound); -static TI_BOOL sme_SelectRsnMatch (TI_HANDLE hSme, TSiteEntry *pCurrentSite); - -/** - * \fn sme_Select - * \brief Select a connection candidate from the scan result table - * - * Select a connection candidate from the scan result table. - * - * Connection candidate must match SSID, BSSID, BSS type, RSN and WSC settings, has the best - * RSSI level from all matching sites, and connection was not attempted to it in this SME cycle - * (since last scan was completed) - * - * \param hSme - handle to the SME object - * \return A pointer to the selected site, NULL if no site macthes the selection criteria - */ -TSiteEntry *sme_Select (TI_HANDLE hSme) -{ - TSme *pSme = (TSme*)hSme; - TSiteEntry *pCurrentSite, *pSelectedSite = NULL; - TI_INT8 iSelectedSiteRssi = -127; /* minimum RSSI */ - TI_BOOL bWscPbAbort, pWscPbApFound = TI_FALSE; - int apFoundCtr =0; - TIWLN_SIMPLE_CONFIG_MODE eWscMode; - - TRACE0(pSme->hReport, REPORT_SEVERITY_INFORMATION , "sme_Select called\n"); - - /* on SG avalanche, select is not needed, send connect event automatically */ - if (TI_TRUE == pSme->bReselect) - { - paramInfo_t *pParam; - - TRACE0(pSme->hReport, REPORT_SEVERITY_INFORMATION , "sme_Select: reselect flag is on, reselecting the current site\n"); - - pParam = (paramInfo_t *)os_memoryAlloc(pSme->hOS, sizeof(paramInfo_t)); - if (!pParam) - { - return NULL; - } - - pSme->bReselect = TI_FALSE; - - /* Get Primary Site */ - pParam->paramType = SITE_MGR_GET_PRIMARY_SITE; - siteMgr_getParam(pSme->hSiteMgr, pParam); - pCurrentSite = pParam->content.pPrimarySite; - os_memoryFree(pSme->hOS, pParam, sizeof(paramInfo_t)); - return pCurrentSite; - } - - /* get the first site from the scan result table */ - pCurrentSite = scanResultTable_GetFirst (pSme->hScanResultTable); - - /* check all sites */ - while (NULL != pCurrentSite) - { - TRACE6(pSme->hReport, REPORT_SEVERITY_INFORMATION , "sme_Select: considering BSSID: %02x:%02x:%02x:%02x:%02x:%02x for selection\n", pCurrentSite->bssid[ 0 ], pCurrentSite->bssid[ 1 ], pCurrentSite->bssid[ 2 ], pCurrentSite->bssid[ 3 ], pCurrentSite->bssid[ 4 ], pCurrentSite->bssid[ 5 ]); - - /* if this site was previously selected in the current SME connection attempt, and conn mode is auto */ - if (TI_TRUE == pCurrentSite->bConsideredForSelect) - { - TRACE6(pSme->hReport, REPORT_SEVERITY_INFORMATION , "sme_Select: BSSID: %02x:%02x:%02x:%02x:%02x:%02x was selected previously\n", pCurrentSite->bssid[ 0 ], pCurrentSite->bssid[ 1 ], pCurrentSite->bssid[ 2 ], pCurrentSite->bssid[ 3 ], pCurrentSite->bssid[ 4 ], pCurrentSite->bssid[ 5 ]); - /* get the next site and continue the loop */ - pCurrentSite = scanResultTable_GetNext (pSme->hScanResultTable); - continue; - } - - /* check if site matches */ - /* first check SSID match */ - if (TI_FALSE == sme_SelectSsidMatch (hSme, &(pCurrentSite->ssid), &(pSme->tSsid), pSme->eSsidType)) - /* site doesn't match */ - { - TRACE6(pSme->hReport, REPORT_SEVERITY_INFORMATION , "sme_Select: BSSID: %02x:%02x:%02x:%02x:%02x:%02x doesn't match SSID\n", pCurrentSite->bssid[ 0 ], pCurrentSite->bssid[ 1 ], pCurrentSite->bssid[ 2 ], pCurrentSite->bssid[ 3 ], pCurrentSite->bssid[ 4 ], pCurrentSite->bssid[ 5 ]); - pCurrentSite->bConsideredForSelect = TI_TRUE; /* don't try this site again */ - /* get the next site and continue the loop */ - pCurrentSite = scanResultTable_GetNext (pSme->hScanResultTable); - continue; - } - - /* Now check BSSID match */ - if (TI_FALSE == sme_SelectBssidMatch (&(pCurrentSite->bssid), &(pSme->tBssid))) - /* site doesn't match */ - { - TRACE6(pSme->hReport, REPORT_SEVERITY_INFORMATION , "sme_Select: BSSID: %02x:%02x:%02x:%02x:%02x:%02x doesn't match SSID\n", pCurrentSite->bssid[ 0 ], pCurrentSite->bssid[ 1 ], pCurrentSite->bssid[ 2 ], pCurrentSite->bssid[ 3 ], pCurrentSite->bssid[ 4 ], pCurrentSite->bssid[ 5 ]); - pCurrentSite->bConsideredForSelect = TI_TRUE; /* don't try this site again */ - /* get the next site and continue the loop */ - pCurrentSite = scanResultTable_GetNext (pSme->hScanResultTable); - continue; - } - - /* and BSS type match */ - if (TI_FALSE == sme_SelectBssTypeMatch (pCurrentSite->bssType, pSme->eBssType)) - /* site doesn't match */ - { - TRACE6(pSme->hReport, REPORT_SEVERITY_INFORMATION , "sme_Select: BSSID: %02x:%02x:%02x:%02x:%02x:%02x doesn't match BSS type\n", pCurrentSite->bssid[ 0 ], pCurrentSite->bssid[ 1 ], pCurrentSite->bssid[ 2 ], pCurrentSite->bssid[ 3 ], pCurrentSite->bssid[ 4 ], pCurrentSite->bssid[ 5 ]); - pCurrentSite->bConsideredForSelect = TI_TRUE; /* don't try this site again */ - /* get the next site and continue the loop */ - pCurrentSite = scanResultTable_GetNext (pSme->hScanResultTable); - continue; - } - - if (pCurrentSite->WSCSiteMode == TIWLN_SIMPLE_CONFIG_PBC_METHOD) - { - apFoundCtr++; - } - if (apFoundCtr > 1) - { - pWscPbApFound = TI_TRUE; - } - - /* and simple config match */ - if (TI_FALSE == sme_SelectWscMatch (hSme, pCurrentSite, &bWscPbAbort, &pWscPbApFound)) - /* site doesn't match */ - { - /* also check if abort was indicated */ - if (TI_TRUE == bWscPbAbort) - { - /* send event to user mode to indicate this */ - EvHandlerSendEvent (pSme->hEvHandler, IPC_EVENT_WPS_SESSION_OVERLAP, NULL, 0); - /* select failed - will rescan in time */ - return NULL; - } - TRACE6(pSme->hReport, REPORT_SEVERITY_INFORMATION , "sme_Select: BSSID: %02x:%02x:%02x:%02x:%02x:%02x doesn't match WSC\n", pCurrentSite->bssid[ 0 ], pCurrentSite->bssid[ 1 ], pCurrentSite->bssid[ 2 ], pCurrentSite->bssid[ 3 ], pCurrentSite->bssid[ 4 ], pCurrentSite->bssid[ 5 ]); - pCurrentSite->bConsideredForSelect = TI_TRUE; /* don't try this site again */ - /* get the next site and continue the loop */ - pCurrentSite = scanResultTable_GetNext (pSme->hScanResultTable); - continue; - } - - /* and security match */ - siteMgr_getParamWSC(pSme->hSiteMgr, &eWscMode); - - /* we don't need to check RSN match while WSC is active */ - if ((pCurrentSite->WSCSiteMode == TIWLN_SIMPLE_CONFIG_OFF) || (pCurrentSite->WSCSiteMode != eWscMode)) - { - if (TI_FALSE == sme_SelectRsnMatch (hSme, pCurrentSite)) - /* site doesn't match */ - { - TRACE6(pSme->hReport, REPORT_SEVERITY_INFORMATION , "sme_Select: BSSID: %02x:%02x:%02x:%02x:%02x:%02x doesn't match RSN\n", pCurrentSite->bssid[ 0 ], pCurrentSite->bssid[ 1 ], pCurrentSite->bssid[ 2 ], pCurrentSite->bssid[ 3 ], pCurrentSite->bssid[ 4 ], pCurrentSite->bssid[ 5 ]); - pCurrentSite->bConsideredForSelect = TI_TRUE; /* don't try this site again */ - /* get the next site and continue the loop */ - pCurrentSite = scanResultTable_GetNext (pSme->hScanResultTable); - continue; - } - } - - /* and rate match */ - if (TI_FALSE == siteMgr_SelectRateMatch (pSme->hSiteMgr, pCurrentSite)) - /* site doesn't match */ - { - TRACE6(pSme->hReport, REPORT_SEVERITY_INFORMATION , "sme_Select: BSSID: %02x:%02x:%02x:%02x:%02x:%02x doesn't match rates\n", pCurrentSite->bssid[ 0 ], pCurrentSite->bssid[ 1 ], pCurrentSite->bssid[ 2 ], pCurrentSite->bssid[ 3 ], pCurrentSite->bssid[ 4 ], pCurrentSite->bssid[ 5 ]); - pCurrentSite->bConsideredForSelect = TI_TRUE; /* don't try this site again */ - /* get the next site and continue the loop */ - pCurrentSite = scanResultTable_GetNext (pSme->hScanResultTable); - continue; - } - - if (TI_TRUE == pCurrentSite->bChannelSwitchAnnoncIEFound) - { - TRACE6(pSme->hReport, REPORT_SEVERITY_INFORMATION , "sme_Select: BSSID: %02x:%02x:%02x:%02x:%02x:%02x has channel switch IE so ignore it \n", pCurrentSite->bssid[ 0 ], pCurrentSite->bssid[ 1 ], pCurrentSite->bssid[ 2 ], pCurrentSite->bssid[ 3 ], pCurrentSite->bssid[ 4 ], pCurrentSite->bssid[ 5 ]); - pCurrentSite->bConsideredForSelect = TI_TRUE; /* don't try this site again */ - /* get the next site and continue the loop */ - pCurrentSite = scanResultTable_GetNext (pSme->hScanResultTable); - continue; - } - - /* if this site RSSI is higher than current maximum, select it */ - if (pCurrentSite->rssi > iSelectedSiteRssi) - { - TRACE6(pSme->hReport, REPORT_SEVERITY_INFORMATION , "sme_Select: BSSID: %02x:%02x:%02x:%02x:%02x:%02x match and has highest RSSI so far!\n", pCurrentSite->bssid[ 0 ], pCurrentSite->bssid[ 1 ], pCurrentSite->bssid[ 2 ], pCurrentSite->bssid[ 3 ], pCurrentSite->bssid[ 4 ], pCurrentSite->bssid[ 5 ]); - pSelectedSite = pCurrentSite; - iSelectedSiteRssi = pCurrentSite->rssi; - } - - /* and continue to the next site */ - pCurrentSite = scanResultTable_GetNext (pSme->hScanResultTable); - } - - /* if a matching site was found */ - if (NULL != pSelectedSite) - { - /* mark that a connection to this site was (actually is) attempted */ - pSelectedSite->bConsideredForSelect = TI_TRUE; - - /* hope this is the correct place for siteMgr_changeBandParams */ - siteMgr_changeBandParams (pSme->hSiteMgr, pSelectedSite->eBand); - - /* - * Coordinate between SME module site table and Site module site Table - * copy candidate AP to Site module site Table. - */ - siteMgr_CopyToPrimarySite(pSme->hSiteMgr, pSelectedSite); - - /* copy the result, rather than returning a pointer to the entry in the scan result table. - * This is done since the table might change durring the connection process, and the pointer - * will point to the wrong entry in the table, causing connection/disconnection problems */ - os_memoryCopy(pSme->hOS, &(pSme->tCandidate), pSelectedSite, sizeof(TSiteEntry)); - - return &(pSme->tCandidate); - } - - /* return NULL if no site was selected */ - return NULL; -} - -/** - * \fn sme_SelectSsidMatch - * \brief Check if a site SSID matches the desired SSID for selection - * - * Check if a site SSID matches the desired SSID for selection - * - * \param hSme - handle to the SME object - * \param pSiteSsid - the site SSID - * \param pDesiredSsid - the desired SSID - * \param edesiredSsidType - the desired SSID type - * \return TI_TRUE if SSIDs match, TI_FALSE if they don't - * \sa sme_Select - */ -TI_BOOL sme_SelectSsidMatch (TI_HANDLE hSme, TSsid *pSiteSsid, TSsid *pDesiredSsid, - ESsidType eDesiredSsidType) -{ - TSme *pSme = (TSme*)hSme; - - /*If SSID length is 0 (hidden SSID)- Discard*/ - if (pSiteSsid->len == 0) - { - return TI_FALSE; - } - - /* if the desired SSID type is any, return TRUE (site matches) */ - if (SSID_TYPE_ANY == eDesiredSsidType) - { - return TI_TRUE; - } - /* It looks like it never happens. Anyway decided to check */ - if (( pSiteSsid->len > MAX_SSID_LEN ) || - ( pDesiredSsid->len > MAX_SSID_LEN )) - { - TRACE3( pSme->hReport, REPORT_SEVERITY_ERROR, - "sme_SelectSsidMatch. pSme->tSsid.len=%d or pDesiredSsid->len =%d exceed the limit %d\n", - pSiteSsid->len, pDesiredSsid->len, MAX_SSID_LEN); - handleRunProblem(PROBLEM_BUF_SIZE_VIOLATION); - return TI_FALSE; - } - /* otherwise, check if the SSIDs match */ - if ((pSiteSsid->len == pDesiredSsid->len) && /* lngth match */ - (0 == os_memoryCompare (pSme->hOS, (TI_UINT8 *)&(pSiteSsid->str[ 0 ]), (TI_UINT8 *)&(pDesiredSsid->str[ 0 ]), pSiteSsid->len))) /* content match */ - { - return TI_TRUE; - } - else - { - return TI_FALSE; - } -} - -/** - * \fn sme_SelectBssidMatch - * \brief Check if a site BSSID matches the desired BSSID for selection - * - * Check if a site BSSID matches the desired BSSID for selection - * - * \param pSiteBssid - the site BSSID - * \param pDesiredBssid - the desired BSSID - * \return TI_TRUE if BSSIDs match, TI_FALSE if they don't - * \sa sme_Select - */ -TI_BOOL sme_SelectBssidMatch (TMacAddr *pSiteBssid, TMacAddr *pDesiredBssid) -{ - /* check if the desired BSSID is broadcast (no need to match) */ - if (TI_TRUE == MAC_BROADCAST (*pDesiredBssid)) - { - return TI_TRUE; - } - - /* if the desired BSSID is not any BSSID, check if the site BSSID equals the desired BSSID */ - if (TI_TRUE == MAC_EQUAL (*pDesiredBssid, *pSiteBssid)) - { - return TI_TRUE; - } - - /* no match */ - return TI_FALSE; -} - -/** - * \fn sme_SelectBssTypeMatch - * \brief Checks if the desired BSS type match the BSS type of a site - * - * Checks if the desired BSS type match the BSS type of a site - * - * \param eSiteBssType - the site BSS type - * \param edesiredBssType - the desired BSS type - * \return TI_TRUE if the BSS types matches, TI_FALSE if they don't - * \sa sme_Select - */ -TI_BOOL sme_SelectBssTypeMatch (ScanBssType_e eSiteBssType, ScanBssType_e eDesiredBssType) -{ - /* if the desired type is any, there is a match */ - if (BSS_ANY == eDesiredBssType) - { - return TI_TRUE; - } - - /* if the BSS types equal, there is a match */ - if (eDesiredBssType == eSiteBssType) - { - return TI_TRUE; - } - - /* no match */ - return TI_FALSE; -} - -/** - * \fn sme_SelectWscMatch - * \brief checks if the configred WSC mode equals the WSC mode of a site - * - * checks if the configred WSC mode equals the WSC mode of a site - * - * \param hSme - handle to the SME object - * \param pCurrentSite - site to check - * \return TI_TRUE if site macthes current WSC mode, TI_FALSE if it doesn't match - * \sa sme_Select - */ -TI_BOOL sme_SelectWscMatch (TI_HANDLE hSme, TSiteEntry *pCurrentSite, - TI_BOOL *pbWscPbAbort, TI_BOOL *pbWscPbApFound) -{ - TSme *pSme = (TSme*)hSme; - TIWLN_SIMPLE_CONFIG_MODE wscMode; - - /* get the WSC mode from site mgr */ - siteMgr_getParamWSC(pSme->hSiteMgr, &wscMode); /* SITE_MGR_SIMPLE_CONFIG_MODE - get the WSC mode from site mgr */ - - /* if simple config is off, site match */ - if (TIWLN_SIMPLE_CONFIG_OFF == wscMode) - { - return TI_TRUE; - } - - /* if WSC is supported, and more than one AP with PB configuration is found - indicate to abort */ - if ((TI_TRUE == *pbWscPbApFound) && (TIWLN_SIMPLE_CONFIG_PBC_METHOD == pCurrentSite->WSCSiteMode)) - { - TRACE1(pSme->hReport, REPORT_SEVERITY_INFORMATION , "sme_SelectWscMatch: WSC mode is %d, and more than one AP with WSC PB found - aborting\n", wscMode); - *pbWscPbAbort = TI_TRUE; - return TI_FALSE; - } - else - { - /* indicate NOT to abort the select process */ - *pbWscPbAbort = TI_FALSE; - } - - /* if configured simple config mode equals site simple config mode, site match */ - if (pCurrentSite->WSCSiteMode == wscMode) - { - return TI_TRUE; - } - - /* site doesn't match */ - return TI_FALSE; -} - -/** - * \fn sme_SelectRsnMatch - * \brief Checks if the configured scurity settings match those of a site - * - * Checks if the configured scurity settings match those of a site - * - * \param hSme - handle to the SME object - * \param pCurrentSite - the site to check - * \return TI_TRUE if site matches RSN settings, TI FALSE if it doesn't - * \sa sme_Select - */ -TI_BOOL sme_SelectRsnMatch (TI_HANDLE hSme, TSiteEntry *pCurrentSite) -{ - TSme *pSme = (TSme*)hSme; - TRsnData tRsnData; - dot11_RSN_t *pRsnIe; - TI_UINT8 uRsnIECount=0; - TI_UINT8 uCurRsnData[255]; - TI_UINT32 uLength = 0; - TI_UINT32 uMetric; - TRsnSiteParams tRsnSiteParams; - - tRsnSiteParams.bssType = pCurrentSite->bssType; - MAC_COPY(tRsnSiteParams.bssid, pCurrentSite->bssid); - tRsnSiteParams.pHTCapabilities = &pCurrentSite->tHtCapabilities; - tRsnSiteParams.pHTInfo = &pCurrentSite->tHtInformation; - - /* copy all RSN IE's */ - pRsnIe = pCurrentSite->pRsnIe; - while ((uLength < pCurrentSite->rsnIeLen) && (uRsnIECount < MAX_RSN_IE)) - { - if (uLength + 2 + pRsnIe->hdr[ 1 ] > sizeof (uCurRsnData)) - { - TRACE4( pSme->hReport, REPORT_SEVERITY_ERROR, - "sme_SelectRsnMatch. uRsnIECount=%d, uLength=%d; required copy of %d bytes exceeds the buffer limit %d\n", - uRsnIECount, uLength, pRsnIe->hdr[ 1 ] +2, sizeof (uCurRsnData)); - handleRunProblem(PROBLEM_BUF_SIZE_VIOLATION); - return TI_FALSE; - } - uCurRsnData[ 0 + uLength ] = pRsnIe->hdr[ 0 ]; - uCurRsnData[ 1 + uLength ] = pRsnIe->hdr[ 1 ]; - os_memoryCopy (pSme->hOS, &uCurRsnData[ 2 + uLength ], pRsnIe->rsnIeData, pRsnIe->hdr[ 1 ]); - uLength += pRsnIe->hdr[ 1 ] + 2; - pRsnIe += 1; - uRsnIECount++; - } - /* sanity check - make sure RSN IE's size is not too big */ - if (uLength < pCurrentSite->rsnIeLen) - { - TRACE2(pSme->hReport, REPORT_SEVERITY_ERROR , "sme_SelectRsnMatch, RSN IE is too long: rsnIeLen=%d, MAX_RSN_IE=%d\n", pCurrentSite->rsnIeLen, MAX_RSN_IE); - } - - /* call the RSN to evaluate the site */ - tRsnData.pIe = (pCurrentSite->rsnIeLen == 0) ? NULL : uCurRsnData; - tRsnData.ieLen = pCurrentSite->rsnIeLen; - tRsnData.privacy = pCurrentSite->privacy; - if (rsn_evalSite (pSme->hRsn, &tRsnData, &tRsnSiteParams , &uMetric) != TI_OK) - { - /* no match */ - return TI_FALSE; - } - else - { - /* match! */ - return TI_TRUE; - } -} - |