1 files changed, 508 insertions, 0 deletions

diff --git a/drivers/staging/rt3070/common/rtmp_wep.c b/drivers/staging/rt3070/common/rtmp_wep.c
new file mode 100644
index 00000000000..f5f0a3bb17e
--- /dev/null
+++ b/drivers/staging/rt3070/common/rtmp_wep.c
@@ -0,0 +1,508 @@
+/*
+ *************************************************************************
+ * 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:
+        rtmp_wep.c
+
+        Abstract:
+
+        Revision History:
+        Who                     When                    What
+        --------        ----------              ----------------------------------------------
+        Paul Wu         10-28-02                Initial
+*/
+
+#include        "../rt_config.h"
+
+UINT FCSTAB_32[256] =
+{
+        0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
+        0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
+        0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
+        0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
+        0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
+        0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
+        0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
+        0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
+        0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
+        0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
+        0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
+        0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
+        0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
+        0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
+        0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+        0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
+        0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
+        0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
+        0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
+        0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
+        0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
+        0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
+        0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
+        0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
+        0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
+        0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
+        0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
+        0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
+        0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
+        0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+        0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
+        0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
+        0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
+        0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
+        0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
+        0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
+        0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
+        0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
+        0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
+        0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
+        0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
+        0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
+        0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
+        0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
+        0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+        0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
+        0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
+        0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
+        0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
+        0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
+        0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
+        0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
+        0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
+        0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
+        0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
+        0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
+        0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
+        0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
+        0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
+        0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+        0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
+        0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
+        0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
+        0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
+};
+
+/*
+UCHAR   WEPKEY[] = {
+                //IV
+                0x00, 0x11, 0x22,
+                //WEP KEY
+                0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC
+        };
+ */
+
+/*
+        ========================================================================
+
+        Routine Description:
+                Init WEP function.
+
+        Arguments:
+      pAd               Pointer to our adapter
+                pKey        Pointer to the WEP KEY
+                KeyId              WEP Key ID
+                KeyLen      the length of WEP KEY
+                pDest       Pointer to the destination which Encryption data will store in.
+
+        Return Value:
+                None
+
+        IRQL = DISPATCH_LEVEL
+
+        Note:
+
+        ========================================================================
+*/
+VOID    RTMPInitWepEngine(
+        IN      PRTMP_ADAPTER   pAd,
+        IN      PUCHAR                  pKey,
+        IN      UCHAR                   KeyId,
+        IN      UCHAR                   KeyLen,
+        IN OUT  PUCHAR          pDest)
+{
+        UINT i;
+        UCHAR   WEPKEY[] = {
+                //IV
+                0x00, 0x11, 0x22,
+                //WEP KEY
+                0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC
+        };
+
+        pAd->PrivateInfo.FCSCRC32 = PPPINITFCS32;   //Init crc32.
+
+#ifdef CONFIG_STA_SUPPORT
+    if (pAd->StaCfg.bCkipOn && (pAd->StaCfg.CkipFlag & 0x10) && (pAd->OpMode == OPMODE_STA))
+    {
+        ARCFOUR_INIT(&pAd->PrivateInfo.WEPCONTEXT, pKey, KeyLen);  //INIT SBOX, KEYLEN+3(IV)
+        NdisMoveMemory(pDest, pKey, 3);  //Append Init Vector
+    }
+    else
+#endif // CONFIG_STA_SUPPORT //
+    {
+                NdisMoveMemory(WEPKEY + 3, pKey, KeyLen);
+
+        for(i = 0; i < 3; i++)
+                        WEPKEY[i] = RandomByte(pAd);   //Call mlme RandomByte() function.
+                ARCFOUR_INIT(&pAd->PrivateInfo.WEPCONTEXT, WEPKEY, KeyLen + 3);  //INIT SBOX, KEYLEN+3(IV)
+
+                NdisMoveMemory(pDest, WEPKEY, 3);  //Append Init Vector
+    }
+        *(pDest+3) = (KeyId << 6);       //Append KEYID
+
+}
+
+/*
+        ========================================================================
+
+        Routine Description:
+                Encrypt transimitted data
+
+        Arguments:
+      pAd               Pointer to our adapter
+      pSrc        Pointer to the transimitted source data that will be encrypt
+      pDest       Pointer to the destination where entryption data will be store in.
+      Len                       Indicate the length of the source data
+
+        Return Value:
+      None
+
+        IRQL = DISPATCH_LEVEL
+
+        Note:
+
+        ========================================================================
+*/
+VOID    RTMPEncryptData(
+        IN      PRTMP_ADAPTER   pAd,
+        IN      PUCHAR                  pSrc,
+        IN      PUCHAR                  pDest,
+        IN      UINT                    Len)
+{
+        pAd->PrivateInfo.FCSCRC32 = RTMP_CALC_FCS32(pAd->PrivateInfo.FCSCRC32, pSrc, Len);
+        ARCFOUR_ENCRYPT(&pAd->PrivateInfo.WEPCONTEXT, pDest, pSrc, Len);
+}
+
+
+/*
+        ========================================================================
+
+        Routine Description:
+                Decrypt received WEP data
+
+        Arguments:
+                pAdapter                Pointer to our adapter
+                pSrc        Pointer to the received data
+                Len         the length of the received data
+
+        Return Value:
+                TRUE        Decrypt WEP data success
+                FALSE       Decrypt WEP data failed
+
+        Note:
+
+        ========================================================================
+*/
+BOOLEAN RTMPSoftDecryptWEP(
+        IN PRTMP_ADAPTER        pAd,
+        IN PUCHAR                       pData,
+        IN ULONG                        DataByteCnt,
+        IN PCIPHER_KEY          pGroupKey)
+{
+        UINT    trailfcs;
+        UINT    crc32;
+        UCHAR   KeyIdx;
+        UCHAR   WEPKEY[] = {
+                //IV
+                0x00, 0x11, 0x22,
+                //WEP KEY
+                0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC
+        };
+        UCHAR   *pPayload = (UCHAR *)pData + LENGTH_802_11;
+        ULONG   payload_len = DataByteCnt - LENGTH_802_11;
+
+        NdisMoveMemory(WEPKEY, pPayload, 3);    //Get WEP IV
+
+        KeyIdx = (*(pPayload + 3) & 0xc0) >> 6;
+        if (pGroupKey[KeyIdx].KeyLen == 0)
+                return (FALSE);
+
+        NdisMoveMemory(WEPKEY + 3, pGroupKey[KeyIdx].Key, pGroupKey[KeyIdx].KeyLen);
+        ARCFOUR_INIT(&pAd->PrivateInfo.WEPCONTEXT, WEPKEY, pGroupKey[KeyIdx].KeyLen + 3);
+        ARCFOUR_DECRYPT(&pAd->PrivateInfo.WEPCONTEXT, pPayload, pPayload + 4, payload_len - 4);
+        NdisMoveMemory(&trailfcs, pPayload + payload_len - 8, 4);
+        crc32 = RTMP_CALC_FCS32(PPPINITFCS32, pPayload, payload_len - 8);  //Skip last 4 bytes(FCS).
+        crc32 ^= 0xffffffff;             /* complement */
+
+    if(crc32 != cpu2le32(trailfcs))
+    {
+                DBGPRINT(RT_DEBUG_TRACE, ("! WEP Data CRC Error !\n"));  //CRC error.
+                return (FALSE);
+        }
+        return (TRUE);
+}
+
+/*
+        ========================================================================
+
+        Routine Description:
+                The Stream Cipher Encryption Algorithm "ARCFOUR" initialize
+
+        Arguments:
+           Ctx         Pointer to ARCFOUR CONTEXT (SBOX)
+                pKey        Pointer to the WEP KEY
+                KeyLen      Indicate the length fo the WEP KEY
+
+        Return Value:
+           None
+
+        IRQL = DISPATCH_LEVEL
+
+        Note:
+
+        ========================================================================
+*/
+VOID    ARCFOUR_INIT(
+        IN      PARCFOURCONTEXT Ctx,
+        IN      PUCHAR                  pKey,
+        IN      UINT                    KeyLen)
+{
+        UCHAR   t, u;
+        UINT    keyindex;
+        UINT    stateindex;
+        PUCHAR  state;
+        UINT    counter;
+
+        state = Ctx->STATE;
+        Ctx->X = 0;
+        Ctx->Y = 0;
+        for (counter = 0; counter < 256; counter++)
+                state[counter] = (UCHAR)counter;
+        keyindex = 0;
+        stateindex = 0;
+        for (counter = 0; counter < 256; counter++)
+        {
+                t = state[counter];
+                stateindex = (stateindex + pKey[keyindex] + t) & 0xff;
+                u = state[stateindex];
+                state[stateindex] = t;
+                state[counter] = u;
+                if (++keyindex >= KeyLen)
+                        keyindex = 0;
+        }
+}
+
+/*
+        ========================================================================
+
+        Routine Description:
+                Get bytes from ARCFOUR CONTEXT (S-BOX)
+
+        Arguments:
+           Ctx         Pointer to ARCFOUR CONTEXT (SBOX)
+
+        Return Value:
+           UCHAR  - the value of the ARCFOUR CONTEXT (S-BOX)
+
+        Note:
+
+        ========================================================================
+*/
+UCHAR   ARCFOUR_BYTE(
+        IN      PARCFOURCONTEXT         Ctx)
+{
+  UINT x;
+  UINT y;
+  UCHAR sx, sy;
+  PUCHAR state;
+
+  state = Ctx->STATE;
+  x = (Ctx->X + 1) & 0xff;
+  sx = state[x];
+  y = (sx + Ctx->Y) & 0xff;
+  sy = state[y];
+  Ctx->X = x;
+  Ctx->Y = y;
+  state[y] = sx;
+  state[x] = sy;
+
+  return(state[(sx + sy) & 0xff]);
+
+}
+
+/*
+        ========================================================================
+
+        Routine Description:
+                The Stream Cipher Decryption Algorithm
+
+        Arguments:
+                Ctx         Pointer to ARCFOUR CONTEXT (SBOX)
+                pDest                   Pointer to the Destination
+                pSrc        Pointer to the Source data
+                Len         Indicate the length of the Source data
+
+        Return Value:
+                None
+
+        Note:
+
+        ========================================================================
+*/
+VOID    ARCFOUR_DECRYPT(
+        IN      PARCFOURCONTEXT Ctx,
+        IN      PUCHAR                  pDest,
+        IN      PUCHAR                  pSrc,
+        IN      UINT                    Len)
+{
+        UINT i;
+
+        for (i = 0; i < Len; i++)
+                pDest[i] = pSrc[i] ^ ARCFOUR_BYTE(Ctx);
+}
+
+/*
+        ========================================================================
+
+        Routine Description:
+                The Stream Cipher Encryption Algorithm
+
+        Arguments:
+                Ctx         Pointer to ARCFOUR CONTEXT (SBOX)
+                pDest                   Pointer to the Destination
+                pSrc        Pointer to the Source data
+                Len         Indicate the length of the Source dta
+
+        Return Value:
+                None
+
+        IRQL = DISPATCH_LEVEL
+
+        Note:
+
+        ========================================================================
+*/
+VOID    ARCFOUR_ENCRYPT(
+        IN      PARCFOURCONTEXT Ctx,
+        IN      PUCHAR                  pDest,
+        IN      PUCHAR                  pSrc,
+        IN      UINT                    Len)
+{
+        UINT i;
+
+        for (i = 0; i < Len; i++)
+                pDest[i] = pSrc[i] ^ ARCFOUR_BYTE(Ctx);
+}
+
+/*
+        ========================================================================
+
+        Routine Description:
+                The Stream Cipher Encryption Algorithm which conform to the special requirement to encrypt  GTK.
+
+        Arguments:
+                Ctx         Pointer to ARCFOUR CONTEXT (SBOX)
+                pDest                   Pointer to the Destination
+                pSrc        Pointer to the Source data
+                Len         Indicate the length of the Source dta
+
+
+        ========================================================================
+*/
+
+VOID    WPAARCFOUR_ENCRYPT(
+        IN      PARCFOURCONTEXT Ctx,
+        IN      PUCHAR                  pDest,
+        IN      PUCHAR                  pSrc,
+        IN      UINT                    Len)
+{
+        UINT i;
+        //discard first 256 bytes
+        for (i = 0; i < 256; i++)
+            ARCFOUR_BYTE(Ctx);
+
+        for (i = 0; i < Len; i++)
+                pDest[i] = pSrc[i] ^ ARCFOUR_BYTE(Ctx);
+}
+
+
+/*
+        ========================================================================
+
+        Routine Description:
+                Calculate a new FCS given the current FCS and the new data.
+
+        Arguments:
+                Fcs           the original FCS value
+                Cp          pointer to the data which will be calculate the FCS
+                Len         the length of the data
+
+        Return Value:
+                UINT - FCS 32 bits
+
+        IRQL = DISPATCH_LEVEL
+
+        Note:
+
+        ========================================================================
+*/
+UINT    RTMP_CALC_FCS32(
+        IN      UINT    Fcs,
+        IN      PUCHAR  Cp,
+        IN      INT             Len)
+{
+        while (Len--)
+           Fcs = (((Fcs) >> 8) ^ FCSTAB_32[((Fcs) ^ (*Cp++)) & 0xff]);
+
+        return (Fcs);
+}
+
+
+/*
+        ========================================================================
+
+        Routine Description:
+                Get last FCS and encrypt it to the destination
+
+        Arguments:
+                pDest                   Pointer to the Destination
+
+        Return Value:
+                None
+
+        Note:
+
+        ========================================================================
+*/
+VOID    RTMPSetICV(
+        IN      PRTMP_ADAPTER   pAd,
+        IN      PUCHAR  pDest)
+{
+        pAd->PrivateInfo.FCSCRC32 ^= 0xffffffff;             /* complement */
+        pAd->PrivateInfo.FCSCRC32 = cpu2le32(pAd->PrivateInfo.FCSCRC32);
+
+        ARCFOUR_ENCRYPT(&pAd->PrivateInfo.WEPCONTEXT, pDest, (PUCHAR) &pAd->PrivateInfo.FCSCRC32, 4);
+}
+