Staging: add rt3070 wireless driver

This is the Ralink RT3070 driver from the company that does horrible
things like reading a config file from /etc.  However, the driver that
is currently under development from the wireless development community
is not working at all yet, so distros and users are using this version
instead (quite common hardware on a lot of netbook machines).

So here is this driver, for now, until the wireless developers get a
"clean" version into the main tree, or until this version is cleaned up
sufficiently to move out of the staging tree.

Ported to the Linux build system, fixed lots of build issues, forward
ported to the current kernel version, and other minor cleanups were all
done by me.

Cc: Linux wireless <linux-wireless@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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);
+}
+