Staging: add rt3090 wireless driver

This is the vendor driver for the Ralink RT3090 chipset.

It should be later cleaned and ported to use the existing rt2x00
infrastructure or just replaced by the proper version.

[ Unfortunately since it follows the same design/implementation like
  rt{286,287,307}0 drivers (already present in the staging tree)
  it is highly unlikely that it will see much love from the wireless
  development community.. ]

However since the development of the cleaner/proper version can take
significant time lets give distros (i.e. openSUSE seems to already
have the package with the original vendor driver) and users "something"
to use in the meantime.

I forward ported it to 2.6.31-rc1, ported to the Linux build system
and did some initial cleanups.  More fixes/cleanups to come later
(it seems that the driver can be made to share most of its code with
the other Ralink drivers already present in the staging tree).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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;
+}