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author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-22 19:54:53 (GMT) |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-22 20:01:40 (GMT) |
commit | ae19ffbadc1b2100285a5b5b3d0a4e0a11390904 (patch) | |
tree | 3c2086ab67398a019089a47ca3f362a4bc6db74f /drivers/staging/rt3090/sta/sanity.c | |
parent | 34e84f39a27d059a3e6ec6e8b94aafa702e6f220 (diff) | |
parent | 9173a8ef24a6b1b8031507b35b8ffe5f85a87692 (diff) | |
download | linux-fsl-qoriq-ae19ffbadc1b2100285a5b5b3d0a4e0a11390904.tar.xz |
Merge branch 'master' into for-linus
Diffstat (limited to 'drivers/staging/rt3090/sta/sanity.c')
-rw-r--r-- | drivers/staging/rt3090/sta/sanity.c | 382 |
1 files changed, 382 insertions, 0 deletions
diff --git a/drivers/staging/rt3090/sta/sanity.c b/drivers/staging/rt3090/sta/sanity.c new file mode 100644 index 0000000..aeda15b --- /dev/null +++ b/drivers/staging/rt3090/sta/sanity.c @@ -0,0 +1,382 @@ +/* + ************************************************************************* + * Ralink Tech Inc. + * 5F., No.36, Taiyuan St., Jhubei City, + * Hsinchu County 302, + * Taiwan, R.O.C. + * + * (c) Copyright 2002-2007, Ralink Technology, Inc. + * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + * * + ************************************************************************* + + Module Name: + sanity.c + + Abstract: + + Revision History: + Who When What + -------- ---------- ---------------------------------------------- + John Chang 2004-09-01 add WMM support +*/ + +#include "../rt_config.h" + + +extern UCHAR CISCO_OUI[]; + +extern UCHAR WPA_OUI[]; +extern UCHAR RSN_OUI[]; +extern UCHAR WME_INFO_ELEM[]; +extern UCHAR WME_PARM_ELEM[]; +extern UCHAR Ccx2QosInfo[]; +extern UCHAR RALINK_OUI[]; +extern UCHAR BROADCOM_OUI[]; + +/* + ========================================================================== + Description: + MLME message sanity check + Return: + TRUE if all parameters are OK, FALSE otherwise + ========================================================================== + */ +BOOLEAN MlmeStartReqSanity( + IN PRTMP_ADAPTER pAd, + IN VOID *Msg, + IN ULONG MsgLen, + OUT CHAR Ssid[], + OUT UCHAR *pSsidLen) +{ + MLME_START_REQ_STRUCT *Info; + + Info = (MLME_START_REQ_STRUCT *)(Msg); + + if (Info->SsidLen > MAX_LEN_OF_SSID) + { + DBGPRINT(RT_DEBUG_TRACE, ("MlmeStartReqSanity fail - wrong SSID length\n")); + return FALSE; + } + + *pSsidLen = Info->SsidLen; + NdisMoveMemory(Ssid, Info->Ssid, *pSsidLen); + + return TRUE; +} + +/* + ========================================================================== + Description: + MLME message sanity check + Return: + TRUE if all parameters are OK, FALSE otherwise + + IRQL = DISPATCH_LEVEL + + ========================================================================== + */ +BOOLEAN PeerAssocRspSanity( + IN PRTMP_ADAPTER pAd, + IN VOID *pMsg, + IN ULONG MsgLen, + OUT PUCHAR pAddr2, + OUT USHORT *pCapabilityInfo, + OUT USHORT *pStatus, + OUT USHORT *pAid, + OUT UCHAR SupRate[], + OUT UCHAR *pSupRateLen, + OUT UCHAR ExtRate[], + OUT UCHAR *pExtRateLen, + OUT HT_CAPABILITY_IE *pHtCapability, + OUT ADD_HT_INFO_IE *pAddHtInfo, // AP might use this additional ht info IE + OUT UCHAR *pHtCapabilityLen, + OUT UCHAR *pAddHtInfoLen, + OUT UCHAR *pNewExtChannelOffset, + OUT PEDCA_PARM pEdcaParm, + OUT UCHAR *pCkipFlag) +{ + CHAR IeType, *Ptr; + PFRAME_802_11 pFrame = (PFRAME_802_11)pMsg; + PEID_STRUCT pEid; + ULONG Length = 0; + + *pNewExtChannelOffset = 0xff; + *pHtCapabilityLen = 0; + *pAddHtInfoLen = 0; + COPY_MAC_ADDR(pAddr2, pFrame->Hdr.Addr2); + Ptr = (PCHAR)pFrame->Octet; + Length += LENGTH_802_11; + + NdisMoveMemory(pCapabilityInfo, &pFrame->Octet[0], 2); + Length += 2; + NdisMoveMemory(pStatus, &pFrame->Octet[2], 2); + Length += 2; + *pCkipFlag = 0; + *pExtRateLen = 0; + pEdcaParm->bValid = FALSE; + + if (*pStatus != MLME_SUCCESS) + return TRUE; + + NdisMoveMemory(pAid, &pFrame->Octet[4], 2); + Length += 2; + + // Aid already swaped byte order in RTMPFrameEndianChange() for big endian platform + *pAid = (*pAid) & 0x3fff; // AID is low 14-bit + + // -- get supported rates from payload and advance the pointer + IeType = pFrame->Octet[6]; + *pSupRateLen = pFrame->Octet[7]; + if ((IeType != IE_SUPP_RATES) || (*pSupRateLen > MAX_LEN_OF_SUPPORTED_RATES)) + { + DBGPRINT(RT_DEBUG_TRACE, ("PeerAssocRspSanity fail - wrong SupportedRates IE\n")); + return FALSE; + } + else + NdisMoveMemory(SupRate, &pFrame->Octet[8], *pSupRateLen); + + + Length = Length + 2 + *pSupRateLen; + + // many AP implement proprietary IEs in non-standard order, we'd better + // tolerate mis-ordered IEs to get best compatibility + pEid = (PEID_STRUCT) &pFrame->Octet[8 + (*pSupRateLen)]; + + // get variable fields from payload and advance the pointer + while ((Length + 2 + pEid->Len) <= MsgLen) + { + switch (pEid->Eid) + { + case IE_EXT_SUPP_RATES: + if (pEid->Len <= MAX_LEN_OF_SUPPORTED_RATES) + { + NdisMoveMemory(ExtRate, pEid->Octet, pEid->Len); + *pExtRateLen = pEid->Len; + } + break; + + case IE_HT_CAP: + case IE_HT_CAP2: + if (pEid->Len >= SIZE_HT_CAP_IE) //Note: allow extension.!! + { + NdisMoveMemory(pHtCapability, pEid->Octet, SIZE_HT_CAP_IE); + + *(USHORT *)(&pHtCapability->HtCapInfo) = cpu2le16(*(USHORT *)(&pHtCapability->HtCapInfo)); + *(USHORT *)(&pHtCapability->ExtHtCapInfo) = cpu2le16(*(USHORT *)(&pHtCapability->ExtHtCapInfo)); + + *pHtCapabilityLen = SIZE_HT_CAP_IE; + } + else + { + DBGPRINT(RT_DEBUG_WARN, ("PeerAssocRspSanity - wrong IE_HT_CAP. \n")); + } + + break; +#ifdef DOT11_N_SUPPORT + case IE_ADD_HT: + case IE_ADD_HT2: + if (pEid->Len >= sizeof(ADD_HT_INFO_IE)) + { + // This IE allows extension, but we can ignore extra bytes beyond our knowledge , so only + // copy first sizeof(ADD_HT_INFO_IE) + NdisMoveMemory(pAddHtInfo, pEid->Octet, sizeof(ADD_HT_INFO_IE)); + + *(USHORT *)(&pAddHtInfo->AddHtInfo2) = cpu2le16(*(USHORT *)(&pAddHtInfo->AddHtInfo2)); + *(USHORT *)(&pAddHtInfo->AddHtInfo3) = cpu2le16(*(USHORT *)(&pAddHtInfo->AddHtInfo3)); + + *pAddHtInfoLen = SIZE_ADD_HT_INFO_IE; + } + else + { + DBGPRINT(RT_DEBUG_WARN, ("PeerAssocRspSanity - wrong IE_ADD_HT. \n")); + } + + break; + case IE_SECONDARY_CH_OFFSET: + if (pEid->Len == 1) + { + *pNewExtChannelOffset = pEid->Octet[0]; + } + else + { + DBGPRINT(RT_DEBUG_WARN, ("PeerAssocRspSanity - wrong IE_SECONDARY_CH_OFFSET. \n")); + } +#endif // DOT11_N_SUPPORT // + break; + + case IE_VENDOR_SPECIFIC: + // handle WME PARAMTER ELEMENT + if (NdisEqualMemory(pEid->Octet, WME_PARM_ELEM, 6) && (pEid->Len == 24)) + { + PUCHAR ptr; + int i; + + // parsing EDCA parameters + pEdcaParm->bValid = TRUE; + pEdcaParm->bQAck = FALSE; // pEid->Octet[0] & 0x10; + pEdcaParm->bQueueRequest = FALSE; // pEid->Octet[0] & 0x20; + pEdcaParm->bTxopRequest = FALSE; // pEid->Octet[0] & 0x40; + //pEdcaParm->bMoreDataAck = FALSE; // pEid->Octet[0] & 0x80; + pEdcaParm->EdcaUpdateCount = pEid->Octet[6] & 0x0f; + pEdcaParm->bAPSDCapable = (pEid->Octet[6] & 0x80) ? 1 : 0; + ptr = (PUCHAR)&pEid->Octet[8]; + for (i=0; i<4; i++) + { + UCHAR aci = (*ptr & 0x60) >> 5; // b5~6 is AC INDEX + pEdcaParm->bACM[aci] = (((*ptr) & 0x10) == 0x10); // b5 is ACM + pEdcaParm->Aifsn[aci] = (*ptr) & 0x0f; // b0~3 is AIFSN + pEdcaParm->Cwmin[aci] = *(ptr+1) & 0x0f; // b0~4 is Cwmin + pEdcaParm->Cwmax[aci] = *(ptr+1) >> 4; // b5~8 is Cwmax + pEdcaParm->Txop[aci] = *(ptr+2) + 256 * (*(ptr+3)); // in unit of 32-us + ptr += 4; // point to next AC + } + } + break; + default: + DBGPRINT(RT_DEBUG_TRACE, ("PeerAssocRspSanity - ignore unrecognized EID = %d\n", pEid->Eid)); + break; + } + + Length = Length + 2 + pEid->Len; + pEid = (PEID_STRUCT)((UCHAR*)pEid + 2 + pEid->Len); + } + + + return TRUE; +} + +/* + ========================================================================== + Description: + MLME message sanity check + Return: + TRUE if all parameters are OK, FALSE otherwise + + IRQL = DISPATCH_LEVEL + + ========================================================================== + */ +BOOLEAN PeerProbeReqSanity( + IN PRTMP_ADAPTER pAd, + IN VOID *Msg, + IN ULONG MsgLen, + OUT PUCHAR pAddr2, + OUT CHAR Ssid[], + OUT UCHAR *pSsidLen) +{ + UCHAR Idx; + UCHAR RateLen; + CHAR IeType; + PFRAME_802_11 pFrame = (PFRAME_802_11)Msg; + + COPY_MAC_ADDR(pAddr2, pFrame->Hdr.Addr2); + + if ((pFrame->Octet[0] != IE_SSID) || (pFrame->Octet[1] > MAX_LEN_OF_SSID)) + { + DBGPRINT(RT_DEBUG_TRACE, ("PeerProbeReqSanity fail - wrong SSID IE(Type=%d,Len=%d)\n",pFrame->Octet[0],pFrame->Octet[1])); + return FALSE; + } + + *pSsidLen = pFrame->Octet[1]; + NdisMoveMemory(Ssid, &pFrame->Octet[2], *pSsidLen); + + Idx = *pSsidLen + 2; + + // -- get supported rates from payload and advance the pointer + IeType = pFrame->Octet[Idx]; + RateLen = pFrame->Octet[Idx + 1]; + if (IeType != IE_SUPP_RATES) + { + DBGPRINT(RT_DEBUG_TRACE, ("PeerProbeReqSanity fail - wrong SupportRates IE(Type=%d,Len=%d)\n",pFrame->Octet[Idx],pFrame->Octet[Idx+1])); + return FALSE; + } + else + { + if ((pAd->CommonCfg.PhyMode == PHY_11G) && (RateLen < 8)) + return (FALSE); + } + + return TRUE; +} + +/* + ========================================================================== + Description: + + IRQL = DISPATCH_LEVEL + + ========================================================================== + */ +BOOLEAN GetTimBit( + IN CHAR *Ptr, + IN USHORT Aid, + OUT UCHAR *TimLen, + OUT UCHAR *BcastFlag, + OUT UCHAR *DtimCount, + OUT UCHAR *DtimPeriod, + OUT UCHAR *MessageToMe) +{ + UCHAR BitCntl, N1, N2, MyByte, MyBit; + CHAR *IdxPtr; + + IdxPtr = Ptr; + + IdxPtr ++; + *TimLen = *IdxPtr; + + // get DTIM Count from TIM element + IdxPtr ++; + *DtimCount = *IdxPtr; + + // get DTIM Period from TIM element + IdxPtr++; + *DtimPeriod = *IdxPtr; + + // get Bitmap Control from TIM element + IdxPtr++; + BitCntl = *IdxPtr; + + if ((*DtimCount == 0) && (BitCntl & 0x01)) + *BcastFlag = TRUE; + else + *BcastFlag = FALSE; + + // Parse Partial Virtual Bitmap from TIM element + N1 = BitCntl & 0xfe; // N1 is the first bitmap byte# + N2 = *TimLen - 4 + N1; // N2 is the last bitmap byte# + + if ((Aid < (N1 << 3)) || (Aid >= ((N2 + 1) << 3))) + *MessageToMe = FALSE; + else + { + MyByte = (Aid >> 3) - N1; // my byte position in the bitmap byte-stream + MyBit = Aid % 16 - ((MyByte & 0x01)? 8:0); + + IdxPtr += (MyByte + 1); + + //if (*IdxPtr) + // DBGPRINT(RT_DEBUG_WARN, ("TIM bitmap = 0x%02x\n", *IdxPtr)); + + if (*IdxPtr & (0x01 << MyBit)) + *MessageToMe = TRUE; + else + *MessageToMe = FALSE; + } + + return TRUE; +} |