| /* |
| ************************************************************************* |
| * 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 |
| Justin P. Mattock 11/07/2010 Fix typos |
| */ |
| #include "../rt_config.h" |
| |
| extern u8 CISCO_OUI[]; |
| |
| extern u8 WPA_OUI[]; |
| extern u8 RSN_OUI[]; |
| extern u8 WME_INFO_ELEM[]; |
| extern u8 WME_PARM_ELEM[]; |
| extern u8 Ccx2QosInfo[]; |
| extern u8 RALINK_OUI[]; |
| extern u8 BROADCOM_OUI[]; |
| |
| /* |
| ========================================================================== |
| Description: |
| MLME message sanity check |
| Return: |
| TRUE if all parameters are OK, FALSE otherwise |
| ========================================================================== |
| */ |
| BOOLEAN MlmeStartReqSanity(struct rt_rtmp_adapter *pAd, |
| void * Msg, |
| unsigned long MsgLen, |
| char Ssid[], u8 * pSsidLen) |
| { |
| struct rt_mlme_start_req *Info; |
| |
| Info = (struct rt_mlme_start_req *)(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(struct rt_rtmp_adapter *pAd, void * pMsg, unsigned long MsgLen, u8 *pAddr2, u16 * pCapabilityInfo, u16 * pStatus, u16 * pAid, u8 SupRate[], u8 * pSupRateLen, u8 ExtRate[], u8 * pExtRateLen, struct rt_ht_capability_ie * pHtCapability, struct rt_add_ht_info_ie * pAddHtInfo, /* AP might use this additional ht info IE */ |
| u8 * pHtCapabilityLen, |
| u8 * pAddHtInfoLen, |
| u8 * pNewExtChannelOffset, |
| struct rt_edca_parm *pEdcaParm, u8 * pCkipFlag) |
| { |
| char IeType, *Ptr; |
| struct rt_frame_802_11 * pFrame = (struct rt_frame_802_11 *) pMsg; |
| struct rt_eid * pEid; |
| unsigned long Length = 0; |
| |
| *pNewExtChannelOffset = 0xff; |
| *pHtCapabilityLen = 0; |
| *pAddHtInfoLen = 0; |
| COPY_MAC_ADDR(pAddr2, pFrame->Hdr.Addr2); |
| Ptr = (char *)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 swapped 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 = (struct rt_eid *) & 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); |
| |
| *(u16 *) (&pHtCapability->HtCapInfo) = |
| cpu2le16(*(u16 *) |
| (&pHtCapability->HtCapInfo)); |
| *(u16 *) (&pHtCapability->ExtHtCapInfo) = |
| cpu2le16(*(u16 *) |
| (&pHtCapability->ExtHtCapInfo)); |
| |
| *pHtCapabilityLen = SIZE_HT_CAP_IE; |
| } else { |
| DBGPRINT(RT_DEBUG_WARN, |
| ("PeerAssocRspSanity - wrong IE_HT_CAP. \n")); |
| } |
| |
| break; |
| case IE_ADD_HT: |
| case IE_ADD_HT2: |
| if (pEid->Len >= sizeof(struct rt_add_ht_info_ie)) { |
| /* This IE allows extension, but we can ignore extra bytes beyond our knowledge , so only */ |
| /* copy first sizeof(struct rt_add_ht_info_ie) */ |
| NdisMoveMemory(pAddHtInfo, pEid->Octet, |
| sizeof(struct rt_add_ht_info_ie)); |
| |
| *(u16 *) (&pAddHtInfo->AddHtInfo2) = |
| cpu2le16(*(u16 *) |
| (&pAddHtInfo->AddHtInfo2)); |
| *(u16 *) (&pAddHtInfo->AddHtInfo3) = |
| cpu2le16(*(u16 *) |
| (&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")); |
| } |
| break; |
| |
| case IE_VENDOR_SPECIFIC: |
| /* handle WME PARAMTER ELEMENT */ |
| if (NdisEqualMemory(pEid->Octet, WME_PARM_ELEM, 6) |
| && (pEid->Len == 24)) { |
| u8 *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 = (u8 *)& pEid->Octet[8]; |
| for (i = 0; i < 4; i++) { |
| u8 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 = (struct rt_eid *) ((u8 *) 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(struct rt_rtmp_adapter *pAd, |
| void * Msg, |
| unsigned long MsgLen, |
| u8 *pAddr2, |
| char Ssid[], u8 * pSsidLen) |
| { |
| u8 Idx; |
| u8 RateLen; |
| char IeType; |
| struct rt_frame_802_11 * pFrame = (struct rt_frame_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(char * Ptr, |
| u16 Aid, |
| u8 * TimLen, |
| u8 * BcastFlag, |
| u8 * DtimCount, |
| u8 * DtimPeriod, u8 * MessageToMe) |
| { |
| u8 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; |
| } |