Staging: add rtl8192SU wireless usb driver

Driver from Realtek for the Realtek RTL8192 USB wifi device

Based on the r8187 driver from Andrea Merello <andreamrl@tiscali.it> and
others.
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/Kconfig

@@ -85,6 +85,8 @@ source "drivers/staging/altpciechdma/Kconfig"
 
 source "drivers/staging/rtl8187se/Kconfig"
 
+source "drivers/staging/rtl8192su/Kconfig"
+
 source "drivers/staging/rspiusb/Kconfig"
 
 source "drivers/staging/mimio/Kconfig"

drivers/staging/Makefile

@@ -25,6 +25,7 @@ obj-$(CONFIG_ASUS_OLED)		+= asus_oled/
 obj-$(CONFIG_PANEL)		+= panel/
 obj-$(CONFIG_ALTERA_PCIE_CHDMA)	+= altpciechdma/
 obj-$(CONFIG_RTL8187SE)		+= rtl8187se/
+obj-$(CONFIG_RTL8192SU)		+= rtl8192su/
 obj-$(CONFIG_USB_RSPI)		+= rspiusb/
 obj-$(CONFIG_INPUT_MIMIO)	+= mimio/
 obj-$(CONFIG_TRANZPORT)		+= frontier/

drivers/staging/rtl8192su/Kconfig

+config RTL8192SU
+	tristate "RealTek RTL8192SU Wireless LAN NIC driver"
+	depends on PCI
+	depends on WIRELESS_EXT && COMPAT_NET_DEV_OPS
+	default N
+	---help---

drivers/staging/rtl8192su/Makefile

+NIC_SELECT = RTL8192SU
+
+EXTRA_CFLAGS += -std=gnu89
+EXTRA_CFLAGS += -O2
+EXTRA_CFLAGS += -mhard-float -DCONFIG_FORCE_HARD_FLOAT=y
+
+EXTRA_CFLAGS += -DJACKSON_NEW_RX
+EXTRA_CFLAGS += -DTHOMAS_BEACON -DTHOMAS_TURBO
+#EXTRA_CFLAGS += -DUSE_ONE_PIPE
+EXTRA_CFLAGS += -DENABLE_DOT11D
+
+EXTRA_CFLAGS += -DRTL8192SU
+EXTRA_CFLAGS += -DRTL8190_Download_Firmware_From_Header=1
+EXTRA_CFLAGS += -DRTL8192S_PREPARE_FOR_NORMAL_RELEASE
+EXTRA_CFLAGS += -DRTL8192SU_DISABLE_IQK=1
+
+#EXTRA_CFLAGS += -DEEPROM_OLD_FORMAT_SUPPORT
+
+#EXTRA_CFLAGS += -DUSB_RX_AGGREGATION_SUPPORT=0
+#EXTRA_CFLAGS += -DUSB_TX_DRIVER_AGGREGATION_ENABLE=0
+#EXTRA_CFLAGS += -DRTL8192SU_DISABLE_CCK_RATE=0
+EXTRA_CFLAGS += -DRTL8192S_DISABLE_FW_DM=0
+EXTRA_CFLAGS += -DDISABLE_BB_RF=0
+EXTRA_CFLAGS += -DRTL8192SU_USE_PARAM_TXPWR=0
+EXTRA_CFLAGS += -DRTL8192SU_FPGA_UNSPECIFIED_NETWORK=0
+#EXTRA_CFLAGS += -DRTL8192SU_FPGA_2MAC_VERIFICATION #=0
+EXTRA_CFLAGS += -DRTL8192SU_ASIC_VERIFICATION
+EXTRA_CFLAGS += -DRTL8192SU_USB_PHY_TEST=0
+
+#EXTRA_CFLAGS += -DMUTIPLE_BULK_OUT
+EXTRA_CFLAGS += -DCONFIG_RTL8192_PM
+
+r8192s_usb-objs :=		\
+	r8180_93cx6.o		\
+	r8192U_wx.o		\
+	r8192S_phy.o		\
+	r8192S_rtl6052.o	\
+	r8192S_rtl8225.o	\
+	r819xU_cmdpkt.o		\
+	r8192U_dm.o		\
+	r8192SU_HWImg.o		\
+	r8192S_firmware.o	\
+	r8192S_Efuse.o		\
+	r8192U_core.o		\
+	r8192U_pm.o
+
+ieee80211-rsl-objs :=			\
+	ieee80211/ieee80211_rx.o	\
+	ieee80211/ieee80211_softmac.o	\
+	ieee80211/ieee80211_tx.o	\
+	ieee80211/ieee80211_wx.o	\
+	ieee80211/ieee80211_module.o	\
+	ieee80211/ieee80211_softmac_wx.o\
+	ieee80211/rtl819x_HTProc.o	\
+	ieee80211/rtl819x_TSProc.o	\
+	ieee80211/rtl819x_BAProc.o	\
+	ieee80211/dot11d.o
+
+obj-$(CONFIG_RTL8192SU) += r8192s_usb.o
+obj-$(CONFIG_RTL8192SU) += ieee80211-rsl.o
+obj-$(CONFIG_RTL8192SU) += ieee80211/ieee80211_crypt.o
+obj-$(CONFIG_RTL8192SU) += ieee80211/ieee80211_crypt_tkip.o
+obj-$(CONFIG_RTL8192SU) += ieee80211/ieee80211_crypt_ccmp.o
+obj-$(CONFIG_RTL8192SU) += ieee80211/ieee80211_crypt_wep.o
+
+

drivers/staging/rtl8192su/authors

+Andrea Merello <andreamrl@tiscali.it>

drivers/staging/rtl8192su/dot11d.h

+#ifndef __INC_DOT11D_H
+#define __INC_DOT11D_H
+
+#ifdef ENABLE_DOT11D
+#include "ieee80211.h"
+
+//#define ENABLE_DOT11D
+
+//#define DOT11D_MAX_CHNL_NUM 83
+
+typedef struct _CHNL_TXPOWER_TRIPLE {
+	u8 FirstChnl;
+	u8  NumChnls;
+	u8  MaxTxPowerInDbm;
+}CHNL_TXPOWER_TRIPLE, *PCHNL_TXPOWER_TRIPLE;
+
+typedef enum _DOT11D_STATE {
+	DOT11D_STATE_NONE = 0,
+	DOT11D_STATE_LEARNED,
+	DOT11D_STATE_DONE,
+}DOT11D_STATE;
+
+typedef struct _RT_DOT11D_INFO {
+	//DECLARE_RT_OBJECT(RT_DOT11D_INFO);
+
+	bool bEnabled; // dot11MultiDomainCapabilityEnabled
+
+	u16 CountryIeLen; // > 0 if CountryIeBuf[] contains valid country information element.
+	u8  CountryIeBuf[MAX_IE_LEN];
+	u8  CountryIeSrcAddr[6]; // Source AP of the country IE.
+	u8  CountryIeWatchdog;
+
+	u8  channel_map[MAX_CHANNEL_NUMBER+1];  //!!!Value 0: Invalid, 1: Valid (active scan), 2: Valid (passive scan)
+	//u8  ChnlListLen; // #Bytes valid in ChnlList[].
+	//u8  ChnlList[DOT11D_MAX_CHNL_NUM];
+	u8  MaxTxPwrDbmList[MAX_CHANNEL_NUMBER+1];
+
+	DOT11D_STATE State;
+}RT_DOT11D_INFO, *PRT_DOT11D_INFO;
+#define eqMacAddr(a,b)		( ((a)[0]==(b)[0] && (a)[1]==(b)[1] && (a)[2]==(b)[2] && (a)[3]==(b)[3] && (a)[4]==(b)[4] && (a)[5]==(b)[5]) ? 1:0 )
+#define cpMacAddr(des,src)	      ((des)[0]=(src)[0],(des)[1]=(src)[1],(des)[2]=(src)[2],(des)[3]=(src)[3],(des)[4]=(src)[4],(des)[5]=(src)[5])
+#define GET_DOT11D_INFO(__pIeeeDev) ((PRT_DOT11D_INFO)((__pIeeeDev)->pDot11dInfo))
+
+#define IS_DOT11D_ENABLE(__pIeeeDev) GET_DOT11D_INFO(__pIeeeDev)->bEnabled
+#define IS_COUNTRY_IE_VALID(__pIeeeDev) (GET_DOT11D_INFO(__pIeeeDev)->CountryIeLen > 0)
+
+#define IS_EQUAL_CIE_SRC(__pIeeeDev, __pTa) eqMacAddr(GET_DOT11D_INFO(__pIeeeDev)->CountryIeSrcAddr, __pTa)
+#define UPDATE_CIE_SRC(__pIeeeDev, __pTa) cpMacAddr(GET_DOT11D_INFO(__pIeeeDev)->CountryIeSrcAddr, __pTa)
+
+#define IS_COUNTRY_IE_CHANGED(__pIeeeDev, __Ie) \
+	(((__Ie).Length == 0 || (__Ie).Length != GET_DOT11D_INFO(__pIeeeDev)->CountryIeLen) ? \
+	FALSE : \
+	(!memcmp(GET_DOT11D_INFO(__pIeeeDev)->CountryIeBuf, (__Ie).Octet, (__Ie).Length)))
+
+#define CIE_WATCHDOG_TH 1
+#define GET_CIE_WATCHDOG(__pIeeeDev) GET_DOT11D_INFO(__pIeeeDev)->CountryIeWatchdog
+#define RESET_CIE_WATCHDOG(__pIeeeDev) GET_CIE_WATCHDOG(__pIeeeDev) = 0
+#define UPDATE_CIE_WATCHDOG(__pIeeeDev) ++GET_CIE_WATCHDOG(__pIeeeDev)
+
+#define IS_DOT11D_STATE_DONE(__pIeeeDev) (GET_DOT11D_INFO(__pIeeeDev)->State == DOT11D_STATE_DONE)
+
+
+void
+Dot11d_Init(
+	struct ieee80211_device *dev
+	);
+
+void
+Dot11d_Reset(
+	struct ieee80211_device *dev
+	);
+
+void
+Dot11d_UpdateCountryIe(
+	struct ieee80211_device *dev,
+	u8 *		pTaddr,
+	u16	CoutryIeLen,
+	u8 * pCoutryIe
+	);
+
+u8
+DOT11D_GetMaxTxPwrInDbm(
+	struct ieee80211_device *dev,
+	u8 Channel
+	);
+
+void
+DOT11D_ScanComplete(
+	struct ieee80211_device * dev
+	);
+
+int IsLegalChannel(
+	struct ieee80211_device * dev,
+	u8 channel
+);
+
+int ToLegalChannel(
+	struct ieee80211_device * dev,
+	u8 channel
+);
+#endif //ENABLE_DOT11D
+#endif // #ifndef __INC_DOT11D_H

drivers/staging/rtl8192su/ieee80211/EndianFree.h

+#ifndef __INC_ENDIANFREE_H
+#define __INC_ENDIANFREE_H
+
+/*
+ *	Call endian free function when
+ *		1. Read/write packet content.
+ *		2. Before write integer to IO.
+ *		3. After read integer from IO.
+ */
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20))
+#ifndef bool
+typedef enum{false = 0, true} bool;
+#endif
+#endif
+
+#define __MACHINE_LITTLE_ENDIAN 1234    /* LSB first: i386, vax */
+#define __MACHINE_BIG_ENDIAN    4321    /* MSB first: 68000, ibm, net, ppc */
+
+#define BYTE_ORDER __MACHINE_LITTLE_ENDIAN
+
+#if BYTE_ORDER == __MACHINE_LITTLE_ENDIAN
+// Convert data
+#define EF1Byte(_val)				((u8)(_val))
+#define EF2Byte(_val)				((u16)(_val))
+#define EF4Byte(_val)				((u32)(_val))
+
+#else
+// Convert data
+#define EF1Byte(_val)				((u8)(_val))
+#define EF2Byte(_val)				(((((u16)(_val))&0x00ff)<<8)|((((u16)(_val))&0xff00)>>8))
+#define EF4Byte(_val)				(((((u32)(_val))&0x000000ff)<<24)|\
+						((((u32)(_val))&0x0000ff00)<<8)|\
+						((((u32)(_val))&0x00ff0000)>>8)|\
+						((((u32)(_val))&0xff000000)>>24))
+#endif
+
+// Read data from memory
+#define ReadEF1Byte(_ptr)		EF1Byte(*((u8 *)(_ptr)))
+#define ReadEF2Byte(_ptr)		EF2Byte(*((u16 *)(_ptr)))
+#define ReadEF4Byte(_ptr)		EF4Byte(*((u32 *)(_ptr)))
+
+// Write data to memory
+#define WriteEF1Byte(_ptr, _val)	(*((u8 *)(_ptr)))=EF1Byte(_val)
+#define WriteEF2Byte(_ptr, _val)	(*((u16 *)(_ptr)))=EF2Byte(_val)
+#define WriteEF4Byte(_ptr, _val)	(*((u32 *)(_ptr)))=EF4Byte(_val)
+// Convert Host system specific byte ording (litten or big endia) to Network byte ording (big endian).
+// 2006.05.07, by rcnjko.
+#if BYTE_ORDER == __MACHINE_LITTLE_ENDIAN
+#define H2N1BYTE(_val)	((u8)(_val))
+#define H2N2BYTE(_val)	(((((u16)(_val))&0x00ff)<<8)|\
+			((((u16)(_val))&0xff00)>>8))
+#define H2N4BYTE(_val)	(((((u32)(_val))&0x000000ff)<<24)|\
+			((((u32)(_val))&0x0000ff00)<<8)	|\
+			((((u32)(_val))&0x00ff0000)>>8)	|\
+			((((u32)(_val))&0xff000000)>>24))
+#else
+#define H2N1BYTE(_val)			((u8)(_val))
+#define H2N2BYTE(_val)			((u16)(_val))
+#define H2N4BYTE(_val)			((u32)(_val))
+#endif
+
+// Convert from Network byte ording (big endian) to Host system specific byte ording (litten or big endia).
+// 2006.05.07, by rcnjko.
+#if BYTE_ORDER == __MACHINE_LITTLE_ENDIAN
+#define N2H1BYTE(_val)	((u8)(_val))
+#define N2H2BYTE(_val)	(((((u16)(_val))&0x00ff)<<8)|\
+			((((u16)(_val))&0xff00)>>8))
+#define N2H4BYTE(_val)	(((((u32)(_val))&0x000000ff)<<24)|\
+			((((u32)(_val))&0x0000ff00)<<8)	|\
+			((((u32)(_val))&0x00ff0000)>>8)	|\
+			((((u32)(_val))&0xff000000)>>24))
+#else
+#define N2H1BYTE(_val)			((u8)(_val))
+#define N2H2BYTE(_val)			((u16)(_val))
+#define N2H4BYTE(_val)			((u32)(_val))
+#endif
+
+//
+//	Example:
+//		BIT_LEN_MASK_32(0) => 0x00000000
+//		BIT_LEN_MASK_32(1) => 0x00000001
+//		BIT_LEN_MASK_32(2) => 0x00000003
+//		BIT_LEN_MASK_32(32) => 0xFFFFFFFF
+//
+#define BIT_LEN_MASK_32(__BitLen) (0xFFFFFFFF >> (32 - (__BitLen)))
+//
+//	Example:
+//		BIT_OFFSET_LEN_MASK_32(0, 2) => 0x00000003
+//		BIT_OFFSET_LEN_MASK_32(16, 2) => 0x00030000
+//
+#define BIT_OFFSET_LEN_MASK_32(__BitOffset, __BitLen) (BIT_LEN_MASK_32(__BitLen) << (__BitOffset))
+
+//
+//	Description:
+//		Return 4-byte value in host byte ordering from
+//		4-byte pointer in litten-endian system.
+//
+#define LE_P4BYTE_TO_HOST_4BYTE(__pStart) (EF4Byte(*((u32 *)(__pStart))))
+
+//
+//	Description:
+//		Translate subfield (continuous bits in little-endian) of 4-byte value in litten byte to
+//		4-byte value in host byte ordering.
+//
+#define LE_BITS_TO_4BYTE(__pStart, __BitOffset, __BitLen) \
+	( \
+	  ( LE_P4BYTE_TO_HOST_4BYTE(__pStart) >> (__BitOffset) ) \
+	  & \
+	  BIT_LEN_MASK_32(__BitLen) \
+	)
+
+//
+//	Description:
+//		Mask subfield (continuous bits in little-endian) of 4-byte value in litten byte oredering
+//		and return the result in 4-byte value in host byte ordering.
+//
+#define LE_BITS_CLEARED_TO_4BYTE(__pStart, __BitOffset, __BitLen) \
+	( \
+	  LE_P4BYTE_TO_HOST_4BYTE(__pStart) \
+	  & \
+	  ( ~BIT_OFFSET_LEN_MASK_32(__BitOffset, __BitLen) ) \
+	)
+
+//
+//	Description:
+//		Set subfield of little-endian 4-byte value to specified value.
+//
+#define SET_BITS_TO_LE_4BYTE(__pStart, __BitOffset, __BitLen, __Value) \
+	*((u32 *)(__pStart)) = \
+	EF4Byte( \
+	LE_BITS_CLEARED_TO_4BYTE(__pStart, __BitOffset, __BitLen) \
+	| \
+	( (((u32)__Value) & BIT_LEN_MASK_32(__BitLen)) << (__BitOffset) ) \
+       );
+
+
+#define BIT_LEN_MASK_16(__BitLen) \
+	(0xFFFF >> (16 - (__BitLen)))
+
+#define BIT_OFFSET_LEN_MASK_16(__BitOffset, __BitLen) \
+	(BIT_LEN_MASK_16(__BitLen) << (__BitOffset))
+
+#define LE_P2BYTE_TO_HOST_2BYTE(__pStart) \
+	(EF2Byte(*((u16 *)(__pStart))))
+
+#define LE_BITS_TO_2BYTE(__pStart, __BitOffset, __BitLen) \
+	( \
+	  ( LE_P2BYTE_TO_HOST_2BYTE(__pStart) >> (__BitOffset) ) \
+	  & \
+	  BIT_LEN_MASK_16(__BitLen) \
+	)
+
+#define LE_BITS_CLEARED_TO_2BYTE(__pStart, __BitOffset, __BitLen) \
+	( \
+	  LE_P2BYTE_TO_HOST_2BYTE(__pStart) \
+	  & \
+	  ( ~BIT_OFFSET_LEN_MASK_16(__BitOffset, __BitLen) ) \
+	)
+
+#define SET_BITS_TO_LE_2BYTE(__pStart, __BitOffset, __BitLen, __Value) \
+	*((u16 *)(__pStart)) = \
+	EF2Byte( \
+		LE_BITS_CLEARED_TO_2BYTE(__pStart, __BitOffset, __BitLen) \
+		| \
+		( (((u16)__Value) & BIT_LEN_MASK_16(__BitLen)) << (__BitOffset) ) \
+       );
+
+#define BIT_LEN_MASK_8(__BitLen) \
+	(0xFF >> (8 - (__BitLen)))
+
+#define BIT_OFFSET_LEN_MASK_8(__BitOffset, __BitLen) \
+	(BIT_LEN_MASK_8(__BitLen) << (__BitOffset))
+
+#define LE_P1BYTE_TO_HOST_1BYTE(__pStart) \
+	(EF1Byte(*((u8 *)(__pStart))))
+
+#define LE_BITS_TO_1BYTE(__pStart, __BitOffset, __BitLen) \
+	( \
+	  ( LE_P1BYTE_TO_HOST_1BYTE(__pStart) >> (__BitOffset) ) \
+	  & \
+	  BIT_LEN_MASK_8(__BitLen) \
+	)
+
+#define LE_BITS_CLEARED_TO_1BYTE(__pStart, __BitOffset, __BitLen) \
+	( \
+	  LE_P1BYTE_TO_HOST_1BYTE(__pStart) \
+	  & \
+	  ( ~BIT_OFFSET_LEN_MASK_8(__BitOffset, __BitLen) ) \
+	)
+
+#define SET_BITS_TO_LE_1BYTE(__pStart, __BitOffset, __BitLen, __Value) \
+	*((u8 *)(__pStart)) = \
+	EF1Byte( \
+		LE_BITS_CLEARED_TO_1BYTE(__pStart, __BitOffset, __BitLen) \
+		| \
+		( (((u8)__Value) & BIT_LEN_MASK_8(__BitLen)) << (__BitOffset) ) \
+       );
+
+#endif // #ifndef __INC_ENDIANFREE_H

drivers/staging/rtl8192su/ieee80211/Makefile

+NIC_SELECT = RTL8192SU
+
+EXTRA_CFLAGS += -O2
+EXTRA_CFLAGS += -DRTL8192S_DISABLE_FW_DM=0
+EXTRA_CFLAGS += -DRTL8192SU
+#EXTRA_CFLAGS += -DJOHN_NOCPY
+EXTRA_CFLAGS += -DTHOMAS_TURBO
+#flags to enable or disble 80211D feature
+EXTRA_CFLAGS += -DENABLE_DOT11D
+ieee80211-rsl-objs := ieee80211_rx.o \
+		      ieee80211_softmac.o \
+		      ieee80211_tx.o \
+		      ieee80211_wx.o \
+		      ieee80211_module.o \
+		      ieee80211_softmac_wx.o\
+		      rtl819x_HTProc.o\
+		      rtl819x_TSProc.o\
+		      rtl819x_BAProc.o\
+		      dot11d.o
+
+ieee80211_crypt-rsl-objs := ieee80211_crypt.o
+ieee80211_crypt_tkip-rsl-objs := ieee80211_crypt_tkip.o
+ieee80211_crypt_ccmp-rsl-objs := ieee80211_crypt_ccmp.o
+ieee80211_crypt_wep-rsl-objs := ieee80211_crypt_wep.o
+
+obj-m +=ieee80211-rsl.o
+obj-m +=ieee80211_crypt-rsl.o
+obj-m +=ieee80211_crypt_wep-rsl.o
+obj-m +=ieee80211_crypt_tkip-rsl.o
+obj-m +=ieee80211_crypt_ccmp-rsl.o
+

drivers/staging/rtl8192su/ieee80211/aes.c

+/*
+ * Cryptographic API.
+ *
+ * AES Cipher Algorithm.
+ *
+ * Based on Brian Gladman's code.
+ *
+ * Linux developers:
+ *  Alexander Kjeldaas <astor@fast.no>
+ *  Herbert Valerio Riedel <hvr@hvrlab.org>
+ *  Kyle McMartin <kyle@debian.org>
+ *  Adam J. Richter <adam@yggdrasil.com> (conversion to 2.5 API).
+ *
+ * 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.
+ *
+ * ---------------------------------------------------------------------------
+ * Copyright (c) 2002, Dr Brian Gladman <brg@gladman.me.uk>, Worcester, UK.
+ * All rights reserved.
+ *
+ * LICENSE TERMS
+ *
+ * The free distribution and use of this software in both source and binary
+ * form is allowed (with or without changes) provided that:
+ *
+ *   1. distributions of this source code include the above copyright
+ *      notice, this list of conditions and the following disclaimer;
+ *
+ *   2. distributions in binary form include the above copyright
+ *      notice, this list of conditions and the following disclaimer
+ *      in the documentation and/or other associated materials;
+ *
+ *   3. the copyright holder's name is not used to endorse products
+ *      built using this software without specific written permission.
+ *
+ * ALTERNATIVELY, provided that this notice is retained in full, this product
+ * may be distributed under the terms of the GNU General Public License (GPL),
+ * in which case the provisions of the GPL apply INSTEAD OF those given above.
+ *
+ * DISCLAIMER
+ *
+ * This software is provided 'as is' with no explicit or implied warranties
+ * in respect of its properties, including, but not limited to, correctness
+ * and/or fitness for purpose.
+ * ---------------------------------------------------------------------------
+ */
+
+/* Some changes from the Gladman version:
+    s/RIJNDAEL(e_key)/E_KEY/g
+    s/RIJNDAEL(d_key)/D_KEY/g
+*/
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+//#include <linux/crypto.h>
+#include "rtl_crypto.h"
+#include <asm/byteorder.h>
+
+#define AES_MIN_KEY_SIZE	16
+#define AES_MAX_KEY_SIZE	32
+
+#define AES_BLOCK_SIZE		16
+
+static inline
+u32 generic_rotr32 (const u32 x, const unsigned bits)
+{
+	const unsigned n = bits % 32;
+	return (x >> n) | (x << (32 - n));
+}
+
+static inline
+u32 generic_rotl32 (const u32 x, const unsigned bits)
+{
+	const unsigned n = bits % 32;
+	return (x << n) | (x >> (32 - n));
+}
+
+#define rotl generic_rotl32
+#define rotr generic_rotr32
+
+/*
+ * #define byte(x, nr) ((unsigned char)((x) >> (nr*8)))
+ */
+inline static u8
+byte(const u32 x, const unsigned n)
+{
+	return x >> (n << 3);
+}
+
+#define u32_in(x) le32_to_cpu(*(const u32 *)(x))
+#define u32_out(to, from) (*(u32 *)(to) = cpu_to_le32(from))
+
+struct aes_ctx {
+	int key_length;
+	u32 E[60];
+	u32 D[60];
+};
+
+#define E_KEY ctx->E
+#define D_KEY ctx->D
+
+static u8 pow_tab[256] __initdata;
+static u8 log_tab[256] __initdata;
+static u8 sbx_tab[256] __initdata;
+static u8 isb_tab[256] __initdata;
+static u32 rco_tab[10];
+static u32 ft_tab[4][256];
+static u32 it_tab[4][256];
+
+static u32 fl_tab[4][256];
+static u32 il_tab[4][256];
+
+static inline u8 __init
+f_mult (u8 a, u8 b)
+{
+	u8 aa = log_tab[a], cc = aa + log_tab[b];
+
+	return pow_tab[cc + (cc < aa ? 1 : 0)];
+}
+
+#define ff_mult(a,b)    (a && b ? f_mult(a, b) : 0)
+
+#define f_rn(bo, bi, n, k)					\
+    bo[n] =  ft_tab[0][byte(bi[n],0)] ^				\
+             ft_tab[1][byte(bi[(n + 1) & 3],1)] ^		\
+             ft_tab[2][byte(bi[(n + 2) & 3],2)] ^		\
+             ft_tab[3][byte(bi[(n + 3) & 3],3)] ^ *(k + n)
+
+#define i_rn(bo, bi, n, k)					\
+    bo[n] =  it_tab[0][byte(bi[n],0)] ^				\
+             it_tab[1][byte(bi[(n + 3) & 3],1)] ^		\
+             it_tab[2][byte(bi[(n + 2) & 3],2)] ^		\
+             it_tab[3][byte(bi[(n + 1) & 3],3)] ^ *(k + n)
+
+#define ls_box(x)				\
+    ( fl_tab[0][byte(x, 0)] ^			\
+      fl_tab[1][byte(x, 1)] ^			\
+      fl_tab[2][byte(x, 2)] ^			\
+      fl_tab[3][byte(x, 3)] )
+
+#define f_rl(bo, bi, n, k)					\
+    bo[n] =  fl_tab[0][byte(bi[n],0)] ^				\
+             fl_tab[1][byte(bi[(n + 1) & 3],1)] ^		\
+             fl_tab[2][byte(bi[(n + 2) & 3],2)] ^		\
+             fl_tab[3][byte(bi[(n + 3) & 3],3)] ^ *(k + n)
+
+#define i_rl(bo, bi, n, k)					\
+    bo[n] =  il_tab[0][byte(bi[n],0)] ^				\
+             il_tab[1][byte(bi[(n + 3) & 3],1)] ^		\
+             il_tab[2][byte(bi[(n + 2) & 3],2)] ^		\
+             il_tab[3][byte(bi[(n + 1) & 3],3)] ^ *(k + n)
+
+static void __init
+gen_tabs (void)
+{
+	u32 i, t;
+	u8 p, q;
+
+	/* log and power tables for GF(2**8) finite field with
+	   0x011b as modular polynomial - the simplest primitive
+	   root is 0x03, used here to generate the tables */
+
+	for (i = 0, p = 1; i < 256; ++i) {
+		pow_tab[i] = (u8) p;
+		log_tab[p] = (u8) i;
+
+		p ^= (p << 1) ^ (p & 0x80 ? 0x01b : 0);
+	}
+
+	log_tab[1] = 0;
+
+	for (i = 0, p = 1; i < 10; ++i) {
+		rco_tab[i] = p;
+
+		p = (p << 1) ^ (p & 0x80 ? 0x01b : 0);
+	}
+
+	for (i = 0; i < 256; ++i) {
+		p = (i ? pow_tab[255 - log_tab[i]] : 0);
+		q = ((p >> 7) | (p << 1)) ^ ((p >> 6) | (p << 2));
+		p ^= 0x63 ^ q ^ ((q >> 6) | (q << 2));
+		sbx_tab[i] = p;
+		isb_tab[p] = (u8) i;
+	}
+
+	for (i = 0; i < 256; ++i) {
+		p = sbx_tab[i];
+
+		t = p;
+		fl_tab[0][i] = t;
+		fl_tab[1][i] = rotl (t, 8);
+		fl_tab[2][i] = rotl (t, 16);
+		fl_tab[3][i] = rotl (t, 24);
+
+		t = ((u32) ff_mult (2, p)) |
+		    ((u32) p << 8) |
+		    ((u32) p << 16) | ((u32) ff_mult (3, p) << 24);
+
+		ft_tab[0][i] = t;
+		ft_tab[1][i] = rotl (t, 8);
+		ft_tab[2][i] = rotl (t, 16);
+		ft_tab[3][i] = rotl (t, 24);
+
+		p = isb_tab[i];
+
+		t = p;
+		il_tab[0][i] = t;
+		il_tab[1][i] = rotl (t, 8);
+		il_tab[2][i] = rotl (t, 16);
+		il_tab[3][i] = rotl (t, 24);
+
+		t = ((u32) ff_mult (14, p)) |
+		    ((u32) ff_mult (9, p) << 8) |
+		    ((u32) ff_mult (13, p) << 16) |
+		    ((u32) ff_mult (11, p) << 24);
+
+		it_tab[0][i] = t;
+		it_tab[1][i] = rotl (t, 8);
+		it_tab[2][i] = rotl (t, 16);
+		it_tab[3][i] = rotl (t, 24);
+	}
+}
+
+#define star_x(x) (((x) & 0x7f7f7f7f) << 1) ^ ((((x) & 0x80808080) >> 7) * 0x1b)
+
+#define imix_col(y,x)       \
+    u   = star_x(x);        \
+    v   = star_x(u);        \
+    w   = star_x(v);        \
+    t   = w ^ (x);          \
+   (y)  = u ^ v ^ w;        \
+   (y) ^= rotr(u ^ t,  8) ^ \
+          rotr(v ^ t, 16) ^ \
+          rotr(t,24)
+
+/* initialise the key schedule from the user supplied key */
+
+#define loop4(i)                                    \
+{   t = rotr(t,  8); t = ls_box(t) ^ rco_tab[i];    \
+    t ^= E_KEY[4 * i];     E_KEY[4 * i + 4] = t;    \
+    t ^= E_KEY[4 * i + 1]; E_KEY[4 * i + 5] = t;    \
+    t ^= E_KEY[4 * i + 2]; E_KEY[4 * i + 6] = t;    \
+    t ^= E_KEY[4 * i + 3]; E_KEY[4 * i + 7] = t;    \
+}
+
+#define loop6(i)                                    \
+{   t = rotr(t,  8); t = ls_box(t) ^ rco_tab[i];    \
+    t ^= E_KEY[6 * i];     E_KEY[6 * i + 6] = t;    \
+    t ^= E_KEY[6 * i + 1]; E_KEY[6 * i + 7] = t;    \
+    t ^= E_KEY[6 * i + 2]; E_KEY[6 * i + 8] = t;    \
+    t ^= E_KEY[6 * i + 3]; E_KEY[6 * i + 9] = t;    \
+    t ^= E_KEY[6 * i + 4]; E_KEY[6 * i + 10] = t;   \
+    t ^= E_KEY[6 * i + 5]; E_KEY[6 * i + 11] = t;   \
+}
+
+#define loop8(i)                                    \
+{   t = rotr(t,  8); ; t = ls_box(t) ^ rco_tab[i];  \
+    t ^= E_KEY[8 * i];     E_KEY[8 * i + 8] = t;    \
+    t ^= E_KEY[8 * i + 1]; E_KEY[8 * i + 9] = t;    \
+    t ^= E_KEY[8 * i + 2]; E_KEY[8 * i + 10] = t;   \
+    t ^= E_KEY[8 * i + 3]; E_KEY[8 * i + 11] = t;   \
+    t  = E_KEY[8 * i + 4] ^ ls_box(t);    \
+    E_KEY[8 * i + 12] = t;                \
+    t ^= E_KEY[8 * i + 5]; E_KEY[8 * i + 13] = t;   \
+    t ^= E_KEY[8 * i + 6]; E_KEY[8 * i + 14] = t;   \
+    t ^= E_KEY[8 * i + 7]; E_KEY[8 * i + 15] = t;   \
+}
+
+static int
+aes_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
+{
+	struct aes_ctx *ctx = ctx_arg;
+	u32 i, t, u, v, w;
+
+	if (key_len != 16 && key_len != 24 && key_len != 32) {
+		*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
+		return -EINVAL;
+	}
+
+	ctx->key_length = key_len;
+
+	E_KEY[0] = u32_in (in_key);
+	E_KEY[1] = u32_in (in_key + 4);
+	E_KEY[2] = u32_in (in_key + 8);
+	E_KEY[3] = u32_in (in_key + 12);
+
+	switch (key_len) {
+	case 16:
+		t = E_KEY[3];
+		for (i = 0; i < 10; ++i)
+			loop4 (i);
+		break;
+
+	case 24:
+		E_KEY[4] = u32_in (in_key + 16);
+		t = E_KEY[5] = u32_in (in_key + 20);
+		for (i = 0; i < 8; ++i)
+			loop6 (i);
+		break;
+
+	case 32:
+		E_KEY[4] = u32_in (in_key + 16);
+		E_KEY[5] = u32_in (in_key + 20);
+		E_KEY[6] = u32_in (in_key + 24);
+		t = E_KEY[7] = u32_in (in_key + 28);
+		for (i = 0; i < 7; ++i)
+			loop8 (i);
+		break;
+	}
+
+	D_KEY[0] = E_KEY[0];
+	D_KEY[1] = E_KEY[1];
+	D_KEY[2] = E_KEY[2];
+	D_KEY[3] = E_KEY[3];
+
+	for (i = 4; i < key_len + 24; ++i) {
+		imix_col (D_KEY[i], E_KEY[i]);
+	}
+
+	return 0;
+}
+
+/* encrypt a block of text */
+
+#define f_nround(bo, bi, k) \
+    f_rn(bo, bi, 0, k);     \
+    f_rn(bo, bi, 1, k);     \
+    f_rn(bo, bi, 2, k);     \
+    f_rn(bo, bi, 3, k);     \
+    k += 4
+
+#define f_lround(bo, bi, k) \
+    f_rl(bo, bi, 0, k);     \
+    f_rl(bo, bi, 1, k);     \
+    f_rl(bo, bi, 2, k);     \
+    f_rl(bo, bi, 3, k)
+
+static void aes_encrypt(void *ctx_arg, u8 *out, const u8 *in)
+{
+	const struct aes_ctx *ctx = ctx_arg;
+	u32 b0[4], b1[4];
+	const u32 *kp = E_KEY + 4;
+
+	b0[0] = u32_in (in) ^ E_KEY[0];
+	b0[1] = u32_in (in + 4) ^ E_KEY[1];
+	b0[2] = u32_in (in + 8) ^ E_KEY[2];
+	b0[3] = u32_in (in + 12) ^ E_KEY[3];
+
+	if (ctx->key_length > 24) {
+		f_nround (b1, b0, kp);
+		f_nround (b0, b1, kp);
+	}
+
+	if (ctx->key_length > 16) {
+		f_nround (b1, b0, kp);
+		f_nround (b0, b1, kp);
+	}
+
+	f_nround (b1, b0, kp);
+	f_nround (b0, b1, kp);
+	f_nround (b1, b0, kp);
+	f_nround (b0, b1, kp);
+	f_nround (b1, b0, kp);
+	f_nround (b0, b1, kp);
+	f_nround (b1, b0, kp);
+	f_nround (b0, b1, kp);
+	f_nround (b1, b0, kp);
+	f_lround (b0, b1, kp);
+
+	u32_out (out, b0[0]);
+	u32_out (out + 4, b0[1]);
+	u32_out (out + 8, b0[2]);
+	u32_out (out + 12, b0[3]);
+}
+
+/* decrypt a block of text */
+
+#define i_nround(bo, bi, k) \
+    i_rn(bo, bi, 0, k);     \
+    i_rn(bo, bi, 1, k);     \
+    i_rn(bo, bi, 2, k);     \
+    i_rn(bo, bi, 3, k);     \
+    k -= 4
+
+#define i_lround(bo, bi, k) \
+    i_rl(bo, bi, 0, k);     \
+    i_rl(bo, bi, 1, k);     \
+    i_rl(bo, bi, 2, k);     \
+    i_rl(bo, bi, 3, k)
+
+static void aes_decrypt(void *ctx_arg, u8 *out, const u8 *in)
+{
+	const struct aes_ctx *ctx = ctx_arg;
+	u32 b0[4], b1[4];
+	const int key_len = ctx->key_length;
+	const u32 *kp = D_KEY + key_len + 20;
+
+	b0[0] = u32_in (in) ^ E_KEY[key_len + 24];
+	b0[1] = u32_in (in + 4) ^ E_KEY[key_len + 25];
+	b0[2] = u32_in (in + 8) ^ E_KEY[key_len + 26];
+	b0[3] = u32_in (in + 12) ^ E_KEY[key_len + 27];
+
+	if (key_len > 24) {
+		i_nround (b1, b0, kp);
+		i_nround (b0, b1, kp);
+	}
+
+	if (key_len > 16) {
+		i_nround (b1, b0, kp);
+		i_nround (b0, b1, kp);
+	}
+
+	i_nround (b1, b0, kp);
+	i_nround (b0, b1, kp);
+	i_nround (b1, b0, kp);
+	i_nround (b0, b1, kp);
+	i_nround (b1, b0, kp);
+	i_nround (b0, b1, kp);
+	i_nround (b1, b0, kp);
+	i_nround (b0, b1, kp);
+	i_nround (b1, b0, kp);
+	i_lround (b0, b1, kp);
+
+	u32_out (out, b0[0]);
+	u32_out (out + 4, b0[1]);
+	u32_out (out + 8, b0[2]);
+	u32_out (out + 12, b0[3]);
+}
+
+
+static struct crypto_alg aes_alg = {
+	.cra_name		=	"aes",
+	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
+	.cra_blocksize		=	AES_BLOCK_SIZE,
+	.cra_ctxsize		=	sizeof(struct aes_ctx),
+	.cra_module		=	THIS_MODULE,
+	.cra_list		=	LIST_HEAD_INIT(aes_alg.cra_list),
+	.cra_u			=	{
+		.cipher = {
+			.cia_min_keysize	=	AES_MIN_KEY_SIZE,
+			.cia_max_keysize	=	AES_MAX_KEY_SIZE,
+			.cia_setkey	   	= 	aes_set_key,
+			.cia_encrypt	 	=	aes_encrypt,
+			.cia_decrypt	  	=	aes_decrypt
+		}
+	}
+};
+
+static int __init aes_init(void)
+{
+	gen_tabs();
+	return crypto_register_alg(&aes_alg);
+}
+
+static void __exit aes_fini(void)
+{
+	crypto_unregister_alg(&aes_alg);
+}
+
+module_init(aes_init);
+module_exit(aes_fini);
+
+MODULE_DESCRIPTION("Rijndael (AES) Cipher Algorithm");
+MODULE_LICENSE("Dual BSD/GPL");
+

drivers/staging/rtl8192su/ieee80211/api.c

+/*
+ * Scatterlist Cryptographic API.
+ *
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ * Copyright (c) 2002 David S. Miller (davem@redhat.com)
+ *
+ * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no>
+ * and Nettle, by Niels M鰈ler.
+ *
+ * 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.
+ *
+ */
+#include "kmap_types.h"
+
+#include <linux/init.h>
+#include <linux/module.h>
+//#include <linux/crypto.h>
+#include "rtl_crypto.h"
+#include <linux/errno.h>
+#include <linux/rwsem.h>
+#include <linux/slab.h>
+#include "internal.h"
+
+LIST_HEAD(crypto_alg_list);
+DECLARE_RWSEM(crypto_alg_sem);
+
+static inline int crypto_alg_get(struct crypto_alg *alg)
+{
+	return try_inc_mod_count(alg->cra_module);
+}
+
+static inline void crypto_alg_put(struct crypto_alg *alg)
+{
+	if (alg->cra_module)
+		__MOD_DEC_USE_COUNT(alg->cra_module);
+}
+
+struct crypto_alg *crypto_alg_lookup(const char *name)
+{
+	struct crypto_alg *q, *alg = NULL;
+
+	if (!name)
+		return NULL;
+
+	down_read(&crypto_alg_sem);
+
+	list_for_each_entry(q, &crypto_alg_list, cra_list) {
+		if (!(strcmp(q->cra_name, name))) {
+			if (crypto_alg_get(q))
+				alg = q;
+			break;
+		}
+	}
+
+	up_read(&crypto_alg_sem);
+	return alg;
+}
+
+static int crypto_init_flags(struct crypto_tfm *tfm, u32 flags)
+{
+	tfm->crt_flags = 0;
+
+	switch (crypto_tfm_alg_type(tfm)) {
+	case CRYPTO_ALG_TYPE_CIPHER:
+		return crypto_init_cipher_flags(tfm, flags);
+
+	case CRYPTO_ALG_TYPE_DIGEST:
+		return crypto_init_digest_flags(tfm, flags);
+
+	case CRYPTO_ALG_TYPE_COMPRESS:
+		return crypto_init_compress_flags(tfm, flags);
+
+	default:
+		break;
+	}
+
+	BUG();
+	return -EINVAL;
+}
+
+static int crypto_init_ops(struct crypto_tfm *tfm)
+{
+	switch (crypto_tfm_alg_type(tfm)) {
+	case CRYPTO_ALG_TYPE_CIPHER:
+		return crypto_init_cipher_ops(tfm);
+
+	case CRYPTO_ALG_TYPE_DIGEST:
+		return crypto_init_digest_ops(tfm);
+
+	case CRYPTO_ALG_TYPE_COMPRESS:
+		return crypto_init_compress_ops(tfm);
+
+	default:
+		break;
+	}
+
+	BUG();
+	return -EINVAL;
+}
+
+static void crypto_exit_ops(struct crypto_tfm *tfm)
+{
+	switch (crypto_tfm_alg_type(tfm)) {
+	case CRYPTO_ALG_TYPE_CIPHER:
+		crypto_exit_cipher_ops(tfm);
+		break;
+
+	case CRYPTO_ALG_TYPE_DIGEST:
+		crypto_exit_digest_ops(tfm);
+		break;
+
+	case CRYPTO_ALG_TYPE_COMPRESS:
+		crypto_exit_compress_ops(tfm);
+		break;
+
+	default:
+		BUG();
+
+	}
+}
+
+struct crypto_tfm *crypto_alloc_tfm(const char *name, u32 flags)
+{
+	struct crypto_tfm *tfm = NULL;
+	struct crypto_alg *alg;
+
+	alg = crypto_alg_mod_lookup(name);
+	if (alg == NULL)
+		goto out;
+
+	tfm = kmalloc(sizeof(*tfm) + alg->cra_ctxsize, GFP_KERNEL);
+	if (tfm == NULL)
+		goto out_put;
+
+	memset(tfm, 0, sizeof(*tfm) + alg->cra_ctxsize);
+
+	tfm->__crt_alg = alg;
+
+	if (crypto_init_flags(tfm, flags))
+		goto out_free_tfm;
+
+	if (crypto_init_ops(tfm)) {
+		crypto_exit_ops(tfm);
+		goto out_free_tfm;
+	}
+
+	goto out;
+
+out_free_tfm:
+	kfree(tfm);
+	tfm = NULL;
+out_put:
+	crypto_alg_put(alg);
+out:
+	return tfm;
+}
+
+void crypto_free_tfm(struct crypto_tfm *tfm)
+{
+	struct crypto_alg *alg = tfm->__crt_alg;
+	int size = sizeof(*tfm) + alg->cra_ctxsize;
+
+	crypto_exit_ops(tfm);
+	crypto_alg_put(alg);
+	memset(tfm, 0, size);
+	kfree(tfm);
+}
+
+int crypto_register_alg(struct crypto_alg *alg)
+{
+	int ret = 0;
+	struct crypto_alg *q;
+
+	down_write(&crypto_alg_sem);
+
+	list_for_each_entry(q, &crypto_alg_list, cra_list) {
+		if (!(strcmp(q->cra_name, alg->cra_name))) {
+			ret = -EEXIST;
+			goto out;
+		}
+	}
+
+	list_add_tail(&alg->cra_list, &crypto_alg_list);
+out:
+	up_write(&crypto_alg_sem);
+	return ret;
+}
+
+int crypto_unregister_alg(struct crypto_alg *alg)
+{
+	int ret = -ENOENT;
+	struct crypto_alg *q;
+
+	BUG_ON(!alg->cra_module);
+
+	down_write(&crypto_alg_sem);
+	list_for_each_entry(q, &crypto_alg_list, cra_list) {
+		if (alg == q) {
+			list_del(&alg->cra_list);
+			ret = 0;
+			goto out;
+		}
+	}
+out:
+	up_write(&crypto_alg_sem);
+	return ret;
+}
+
+int crypto_alg_available(const char *name, u32 flags)
+{
+	int ret = 0;
+	struct crypto_alg *alg = crypto_alg_mod_lookup(name);
+
+	if (alg) {
+		crypto_alg_put(alg);
+		ret = 1;
+	}
+
+	return ret;
+}
+
+static int __init init_crypto(void)
+{
+	printk(KERN_INFO "Initializing Cryptographic API\n");
+	crypto_init_proc();
+	return 0;
+}
+
+__initcall(init_crypto);
+
+/*
+EXPORT_SYMBOL_GPL(crypto_register_alg);
+EXPORT_SYMBOL_GPL(crypto_unregister_alg);
+EXPORT_SYMBOL_GPL(crypto_alloc_tfm);
+EXPORT_SYMBOL_GPL(crypto_free_tfm);
+EXPORT_SYMBOL_GPL(crypto_alg_available);
+*/
+
+EXPORT_SYMBOL_NOVERS(crypto_register_alg);
+EXPORT_SYMBOL_NOVERS(crypto_unregister_alg);
+EXPORT_SYMBOL_NOVERS(crypto_alloc_tfm);
+EXPORT_SYMBOL_NOVERS(crypto_free_tfm);
+EXPORT_SYMBOL_NOVERS(crypto_alg_available);

drivers/staging/rtl8192su/ieee80211/arc4.c

+/*
+ * Cryptographic API
+ *
+ * ARC4 Cipher Algorithm
+ *
+ * Jon Oberheide <jon@oberheide.org>
+ *
+ * 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.
+ *
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include "rtl_crypto.h"
+
+#define ARC4_MIN_KEY_SIZE	1
+#define ARC4_MAX_KEY_SIZE	256
+#define ARC4_BLOCK_SIZE		1
+
+struct arc4_ctx {
+	u8 S[256];
+	u8 x, y;
+};
+
+static int arc4_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
+{
+	struct arc4_ctx *ctx = ctx_arg;
+	int i, j = 0, k = 0;
+
+	ctx->x = 1;
+	ctx->y = 0;
+
+	for(i = 0; i < 256; i++)
+		ctx->S[i] = i;
+
+	for(i = 0; i < 256; i++)
+	{
+		u8 a = ctx->S[i];
+		j = (j + in_key[k] + a) & 0xff;
+		ctx->S[i] = ctx->S[j];
+		ctx->S[j] = a;
+		if((unsigned int)++k >= key_len)
+			k = 0;
+	}
+
+	return 0;
+}
+
+static void arc4_crypt(void *ctx_arg, u8 *out, const u8 *in)
+{
+	struct arc4_ctx *ctx = ctx_arg;
+
+	u8 *const S = ctx->S;
+	u8 x = ctx->x;
+	u8 y = ctx->y;
+	u8 a, b;
+
+	a = S[x];
+	y = (y + a) & 0xff;
+	b = S[y];
+	S[x] = b;
+	S[y] = a;
+	x = (x + 1) & 0xff;
+	*out++ = *in ^ S[(a + b) & 0xff];
+
+	ctx->x = x;
+	ctx->y = y;
+}
+
+static struct crypto_alg arc4_alg = {
+	.cra_name		=	"arc4",
+	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
+	.cra_blocksize		=	ARC4_BLOCK_SIZE,
+	.cra_ctxsize		=	sizeof(struct arc4_ctx),
+	.cra_module		=	THIS_MODULE,
+	.cra_list		=	LIST_HEAD_INIT(arc4_alg.cra_list),
+	.cra_u			=	{ .cipher = {
+	.cia_min_keysize	=	ARC4_MIN_KEY_SIZE,
+	.cia_max_keysize	=	ARC4_MAX_KEY_SIZE,
+	.cia_setkey	   	= 	arc4_set_key,
+	.cia_encrypt	 	=	arc4_crypt,
+	.cia_decrypt	  	=	arc4_crypt } }
+};
+
+static int __init arc4_init(void)
+{
+	return crypto_register_alg(&arc4_alg);
+}
+
+
+static void __exit arc4_exit(void)
+{
+	crypto_unregister_alg(&arc4_alg);
+}
+
+module_init(arc4_init);
+module_exit(arc4_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("ARC4 Cipher Algorithm");
+MODULE_AUTHOR("Jon Oberheide <jon@oberheide.org>");

drivers/staging/rtl8192su/ieee80211/autoload.c

+/*
+ * Cryptographic API.
+ *
+ * Algorithm autoloader.
+ *
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ *
+ * 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.
+ *
+ */
+#include "kmap_types.h"
+
+#include <linux/kernel.h>
+//#include <linux/crypto.h>
+#include "rtl_crypto.h"
+#include <linux/string.h>
+#include <linux/kmod.h>
+#include "internal.h"
+
+/*
+ * A far more intelligent version of this is planned.  For now, just
+ * try an exact match on the name of the algorithm.
+ */
+void crypto_alg_autoload(const char *name)
+{
+	request_module(name);
+}
+
+struct crypto_alg *crypto_alg_mod_lookup(const char *name)
+{
+	struct crypto_alg *alg = crypto_alg_lookup(name);
+	if (alg == NULL) {
+		crypto_alg_autoload(name);
+		alg = crypto_alg_lookup(name);
+	}
+	return alg;
+}

drivers/staging/rtl8192su/ieee80211/cipher.c

+/*
+ * Cryptographic API.
+ *
+ * Cipher operations.
+ *
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ *
+ * 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.
+ *
+ */
+#include <linux/kernel.h>
+//#include <linux/crypto.h>
+#include "rtl_crypto.h"
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <asm/scatterlist.h>
+#include "internal.h"
+#include "scatterwalk.h"
+
+typedef void (cryptfn_t)(void *, u8 *, const u8 *);
+typedef void (procfn_t)(struct crypto_tfm *, u8 *,
+                        u8*, cryptfn_t, int enc, void *, int);
+
+static inline void xor_64(u8 *a, const u8 *b)
+{
+	((u32 *)a)[0] ^= ((u32 *)b)[0];
+	((u32 *)a)[1] ^= ((u32 *)b)[1];
+}
+
+static inline void xor_128(u8 *a, const u8 *b)
+{
+	((u32 *)a)[0] ^= ((u32 *)b)[0];
+	((u32 *)a)[1] ^= ((u32 *)b)[1];
+	((u32 *)a)[2] ^= ((u32 *)b)[2];
+	((u32 *)a)[3] ^= ((u32 *)b)[3];
+}
+
+
+/*
+ * Generic encrypt/decrypt wrapper for ciphers, handles operations across
+ * multiple page boundaries by using temporary blocks.  In user context,
+ * the kernel is given a chance to schedule us once per block.
+ */
+static int crypt(struct crypto_tfm *tfm,
+		 struct scatterlist *dst,
+		 struct scatterlist *src,
+                 unsigned int nbytes, cryptfn_t crfn,
+                 procfn_t prfn, int enc, void *info)
+{
+	struct scatter_walk walk_in, walk_out;
+	const unsigned int bsize = crypto_tfm_alg_blocksize(tfm);
+	u8 tmp_src[bsize];
+	u8 tmp_dst[bsize];
+
+	if (!nbytes)
+		return 0;
+
+	if (nbytes % bsize) {
+		tfm->crt_flags |= CRYPTO_TFM_RES_BAD_BLOCK_LEN;
+		return -EINVAL;
+	}
+
+	scatterwalk_start(&walk_in, src);
+	scatterwalk_start(&walk_out, dst);
+
+	for(;;) {
+		u8 *src_p, *dst_p;
+		int in_place;
+
+		scatterwalk_map(&walk_in, 0);
+		scatterwalk_map(&walk_out, 1);
+		src_p = scatterwalk_whichbuf(&walk_in, bsize, tmp_src);
+		dst_p = scatterwalk_whichbuf(&walk_out, bsize, tmp_dst);
+		in_place = scatterwalk_samebuf(&walk_in, &walk_out,
+					       src_p, dst_p);
+
+		nbytes -= bsize;
+
+		scatterwalk_copychunks(src_p, &walk_in, bsize, 0);
+
+		prfn(tfm, dst_p, src_p, crfn, enc, info, in_place);
+
+		scatterwalk_done(&walk_in, 0, nbytes);
+
+		scatterwalk_copychunks(dst_p, &walk_out, bsize, 1);
+		scatterwalk_done(&walk_out, 1, nbytes);
+
+		if (!nbytes)
+			return 0;
+
+		crypto_yield(tfm);
+	}
+}
+
+static void cbc_process(struct crypto_tfm *tfm, u8 *dst, u8 *src,
+			cryptfn_t fn, int enc, void *info, int in_place)
+{
+	u8 *iv = info;
+
+	/* Null encryption */
+	if (!iv)
+		return;
+
+	if (enc) {
+		tfm->crt_u.cipher.cit_xor_block(iv, src);
+		fn(crypto_tfm_ctx(tfm), dst, iv);
+		memcpy(iv, dst, crypto_tfm_alg_blocksize(tfm));
+	} else {
+		u8 stack[in_place ? crypto_tfm_alg_blocksize(tfm) : 0];
+		u8 *buf = in_place ? stack : dst;
+
+		fn(crypto_tfm_ctx(tfm), buf, src);
+		tfm->crt_u.cipher.cit_xor_block(buf, iv);
+		memcpy(iv, src, crypto_tfm_alg_blocksize(tfm));
+		if (buf != dst)
+			memcpy(dst, buf, crypto_tfm_alg_blocksize(tfm));
+	}
+}
+
+static void ecb_process(struct crypto_tfm *tfm, u8 *dst, u8 *src,
+			cryptfn_t fn, int enc, void *info, int in_place)
+{
+	fn(crypto_tfm_ctx(tfm), dst, src);
+}
+
+static int setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen)
+{
+	struct cipher_alg *cia = &tfm->__crt_alg->cra_cipher;
+
+	if (keylen < cia->cia_min_keysize || keylen > cia->cia_max_keysize) {
+		tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
+		return -EINVAL;
+	} else
+		return cia->cia_setkey(crypto_tfm_ctx(tfm), key, keylen,
+		                       &tfm->crt_flags);
+}
+
+static int ecb_encrypt(struct crypto_tfm *tfm,
+		       struct scatterlist *dst,
+                       struct scatterlist *src, unsigned int nbytes)
+{
+	return crypt(tfm, dst, src, nbytes,
+	             tfm->__crt_alg->cra_cipher.cia_encrypt,
+	             ecb_process, 1, NULL);
+}
+
+static int ecb_decrypt(struct crypto_tfm *tfm,
+                       struct scatterlist *dst,
+                       struct scatterlist *src,
+		       unsigned int nbytes)
+{
+	return crypt(tfm, dst, src, nbytes,
+	             tfm->__crt_alg->cra_cipher.cia_decrypt,
+	             ecb_process, 1, NULL);
+}
+
+static int cbc_encrypt(struct crypto_tfm *tfm,
+                       struct scatterlist *dst,
+                       struct scatterlist *src,
+		       unsigned int nbytes)
+{
+	return crypt(tfm, dst, src, nbytes,
+	             tfm->__crt_alg->cra_cipher.cia_encrypt,
+	             cbc_process, 1, tfm->crt_cipher.cit_iv);
+}
+
+static int cbc_encrypt_iv(struct crypto_tfm *tfm,
+                          struct scatterlist *dst,
+                          struct scatterlist *src,
+                          unsigned int nbytes, u8 *iv)
+{
+	return crypt(tfm, dst, src, nbytes,
+	             tfm->__crt_alg->cra_cipher.cia_encrypt,
+	             cbc_process, 1, iv);
+}
+
+static int cbc_decrypt(struct crypto_tfm *tfm,
+                       struct scatterlist *dst,
+                       struct scatterlist *src,
+		       unsigned int nbytes)
+{
+	return crypt(tfm, dst, src, nbytes,
+	             tfm->__crt_alg->cra_cipher.cia_decrypt,
+	             cbc_process, 0, tfm->crt_cipher.cit_iv);
+}
+
+static int cbc_decrypt_iv(struct crypto_tfm *tfm,
+                          struct scatterlist *dst,
+                          struct scatterlist *src,
+                          unsigned int nbytes, u8 *iv)
+{
+	return crypt(tfm, dst, src, nbytes,
+	             tfm->__crt_alg->cra_cipher.cia_decrypt,
+	             cbc_process, 0, iv);
+}
+
+static int nocrypt(struct crypto_tfm *tfm,
+                   struct scatterlist *dst,
+                   struct scatterlist *src,
+		   unsigned int nbytes)
+{
+	return -ENOSYS;
+}
+
+static int nocrypt_iv(struct crypto_tfm *tfm,
+                      struct scatterlist *dst,
+                      struct scatterlist *src,
+                      unsigned int nbytes, u8 *iv)
+{
+	return -ENOSYS;
+}
+
+int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags)
+{
+	u32 mode = flags & CRYPTO_TFM_MODE_MASK;
+
+	tfm->crt_cipher.cit_mode = mode ? mode : CRYPTO_TFM_MODE_ECB;
+	if (flags & CRYPTO_TFM_REQ_WEAK_KEY)
+		tfm->crt_flags = CRYPTO_TFM_REQ_WEAK_KEY;
+
+	return 0;
+}
+
+int crypto_init_cipher_ops(struct crypto_tfm *tfm)
+{
+	int ret = 0;
+	struct cipher_tfm *ops = &tfm->crt_cipher;
+
+	ops->cit_setkey = setkey;
+
+	switch (tfm->crt_cipher.cit_mode) {
+	case CRYPTO_TFM_MODE_ECB:
+		ops->cit_encrypt = ecb_encrypt;
+		ops->cit_decrypt = ecb_decrypt;
+		break;
+
+	case CRYPTO_TFM_MODE_CBC:
+		ops->cit_encrypt = cbc_encrypt;
+		ops->cit_decrypt = cbc_decrypt;
+		ops->cit_encrypt_iv = cbc_encrypt_iv;
+		ops->cit_decrypt_iv = cbc_decrypt_iv;
+		break;
+
+	case CRYPTO_TFM_MODE_CFB:
+		ops->cit_encrypt = nocrypt;
+		ops->cit_decrypt = nocrypt;
+		ops->cit_encrypt_iv = nocrypt_iv;
+		ops->cit_decrypt_iv = nocrypt_iv;
+		break;
+
+	case CRYPTO_TFM_MODE_CTR:
+		ops->cit_encrypt = nocrypt;
+		ops->cit_decrypt = nocrypt;
+		ops->cit_encrypt_iv = nocrypt_iv;
+		ops->cit_decrypt_iv = nocrypt_iv;
+		break;
+
+	default:
+		BUG();
+	}
+
+	if (ops->cit_mode == CRYPTO_TFM_MODE_CBC) {
+
+	    	switch (crypto_tfm_alg_blocksize(tfm)) {
+	    	case 8:
+	    		ops->cit_xor_block = xor_64;
+	    		break;
+
+	    	case 16:
+	    		ops->cit_xor_block = xor_128;
+	    		break;
+
+	    	default:
+	    		printk(KERN_WARNING "%s: block size %u not supported\n",
+	    		       crypto_tfm_alg_name(tfm),
+	    		       crypto_tfm_alg_blocksize(tfm));
+	    		ret = -EINVAL;
+	    		goto out;
+	    	}
+
+		ops->cit_ivsize = crypto_tfm_alg_blocksize(tfm);
+	    	ops->cit_iv = kmalloc(ops->cit_ivsize, GFP_KERNEL);
+		if (ops->cit_iv == NULL)
+			ret = -ENOMEM;
+	}
+
+out:
+	return ret;
+}
+
+void crypto_exit_cipher_ops(struct crypto_tfm *tfm)
+{
+	if (tfm->crt_cipher.cit_iv)
+		kfree(tfm->crt_cipher.cit_iv);
+}

drivers/staging/rtl8192su/ieee80211/compress.c

+/*
+ * Cryptographic API.
+ *
+ * Compression operations.
+ *
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ *
+ * 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.
+ *
+ */
+#include <linux/types.h>
+//#include <linux/crypto.h>
+#include "rtl_crypto.h"
+#include <linux/errno.h>
+#include <asm/scatterlist.h>
+#include <linux/string.h>
+#include "internal.h"
+
+static int crypto_compress(struct crypto_tfm *tfm,
+                            const u8 *src, unsigned int slen,
+                            u8 *dst, unsigned int *dlen)
+{
+	return tfm->__crt_alg->cra_compress.coa_compress(crypto_tfm_ctx(tfm),
+	                                                 src, slen, dst,
+	                                                 dlen);
+}
+
+static int crypto_decompress(struct crypto_tfm *tfm,
+                             const u8 *src, unsigned int slen,
+                             u8 *dst, unsigned int *dlen)
+{
+	return tfm->__crt_alg->cra_compress.coa_decompress(crypto_tfm_ctx(tfm),
+	                                                   src, slen, dst,
+	                                                   dlen);
+}
+
+int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags)
+{
+	return flags ? -EINVAL : 0;
+}
+
+int crypto_init_compress_ops(struct crypto_tfm *tfm)
+{
+	int ret = 0;
+	struct compress_tfm *ops = &tfm->crt_compress;
+
+	ret = tfm->__crt_alg->cra_compress.coa_init(crypto_tfm_ctx(tfm));
+	if (ret)
+		goto out;
+
+	ops->cot_compress = crypto_compress;
+	ops->cot_decompress = crypto_decompress;
+
+out:
+	return ret;
+}
+
+void crypto_exit_compress_ops(struct crypto_tfm *tfm)
+{
+	tfm->__crt_alg->cra_compress.coa_exit(crypto_tfm_ctx(tfm));
+}

drivers/staging/rtl8192su/ieee80211/crypto_compat.h

+/*
+ * Header file to maintain compatibility among different kernel versions.
+ *
+ * Copyright (c) 2004-2006  <lawrence_wang@realsil.com.cn>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation. See README and COPYING for
+ * more details.
+ */
+
+#include <linux/crypto.h>
+
+static inline int crypto_cipher_encrypt(struct crypto_tfm *tfm,
+                                        struct scatterlist *dst,
+                                        struct scatterlist *src,
+                                        unsigned int nbytes)
+{
+	BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
+	return tfm->crt_cipher.cit_encrypt(tfm, dst, src, nbytes);
+}
+
+
+static inline int crypto_cipher_decrypt(struct crypto_tfm *tfm,
+                                        struct scatterlist *dst,
+                                        struct scatterlist *src,
+                                        unsigned int nbytes)
+{
+	BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
+	return tfm->crt_cipher.cit_decrypt(tfm, dst, src, nbytes);
+}
+
+#if 0
+/*
+ *	crypto_free_tfm - Free crypto transform
+ *	@tfm: Transform to free
+ *
+ *	crypto_free_tfm() frees up the transform and any associated resources,
+ *	then drops the refcount on the associated algorithm.
+ */
+void crypto_free_tfm(struct crypto_tfm *tfm)
+{
+	struct crypto_alg *alg;
+	int size;
+
+	if (unlikely(!tfm))
+		return;
+
+	alg = tfm->__crt_alg;
+	size = sizeof(*tfm) + alg->cra_ctxsize;
+
+	if (alg->cra_exit)
+		alg->cra_exit(tfm);
+	crypto_exit_ops(tfm);
+	crypto_mod_put(alg);
+	memset(tfm, 0, size);
+	kfree(tfm);
+}
+
+#endif
+#if 1
+ struct crypto_tfm *crypto_alloc_tfm(const char *name, u32 flags)
+{
+	struct crypto_tfm *tfm = NULL;
+	int err;
+	printk("call crypto_alloc_tfm!!!\n");
+	do {
+		struct crypto_alg *alg;
+
+		alg = crypto_alg_mod_lookup(name, 0, CRYPTO_ALG_ASYNC);
+		err = PTR_ERR(alg);
+		if (IS_ERR(alg))
+			continue;
+
+		tfm = __crypto_alloc_tfm(alg, flags);
+		err = 0;
+		if (IS_ERR(tfm)) {
+			crypto_mod_put(alg);
+			err = PTR_ERR(tfm);
+			tfm = NULL;
+		}
+	} while (err == -EAGAIN && !signal_pending(current));
+
+	return tfm;
+}
+#endif
+//EXPORT_SYMBOL_GPL(crypto_alloc_tfm);
+//EXPORT_SYMBOL_GPL(crypto_free_tfm);
+
+

drivers/staging/rtl8192su/ieee80211/digest.c

+/*
+ * Cryptographic API.
+ *
+ * Digest operations.
+ *
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ *
+ * 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.
+ *
+ */
+//#include <linux/crypto.h>
+#include "rtl_crypto.h"
+#include <linux/mm.h>
+#include <linux/errno.h>
+#include <linux/highmem.h>
+#include <asm/scatterlist.h>
+#include "internal.h"
+
+static void init(struct crypto_tfm *tfm)
+{
+	tfm->__crt_alg->cra_digest.dia_init(crypto_tfm_ctx(tfm));
+}
+
+static void update(struct crypto_tfm *tfm,
+                   struct scatterlist *sg, unsigned int nsg)
+{
+	unsigned int i;
+
+	for (i = 0; i < nsg; i++) {
+
+		struct page *pg = sg[i].page;
+		unsigned int offset = sg[i].offset;
+		unsigned int l = sg[i].length;
+
+		do {
+			unsigned int bytes_from_page = min(l, ((unsigned int)
+							   (PAGE_SIZE)) -
+							   offset);
+			char *p = crypto_kmap(pg, 0) + offset;
+
+			tfm->__crt_alg->cra_digest.dia_update
+					(crypto_tfm_ctx(tfm), p,
+					 bytes_from_page);
+			crypto_kunmap(p, 0);
+			crypto_yield(tfm);
+			offset = 0;
+			pg++;
+			l -= bytes_from_page;
+		} while (l > 0);
+	}
+}
+
+static void final(struct crypto_tfm *tfm, u8 *out)
+{
+	tfm->__crt_alg->cra_digest.dia_final(crypto_tfm_ctx(tfm), out);
+}
+
+static int setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen)
+{
+	u32 flags;
+	if (tfm->__crt_alg->cra_digest.dia_setkey == NULL)
+		return -ENOSYS;
+	return tfm->__crt_alg->cra_digest.dia_setkey(crypto_tfm_ctx(tfm),
+						     key, keylen, &flags);
+}
+
+static void digest(struct crypto_tfm *tfm,
+                   struct scatterlist *sg, unsigned int nsg, u8 *out)
+{
+	unsigned int i;
+
+	tfm->crt_digest.dit_init(tfm);
+
+	for (i = 0; i < nsg; i++) {
+		char *p = crypto_kmap(sg[i].page, 0) + sg[i].offset;
+		tfm->__crt_alg->cra_digest.dia_update(crypto_tfm_ctx(tfm),
+		                                      p, sg[i].length);
+		crypto_kunmap(p, 0);
+		crypto_yield(tfm);
+	}
+	crypto_digest_final(tfm, out);
+}
+
+int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags)
+{
+	return flags ? -EINVAL : 0;
+}
+
+int crypto_init_digest_ops(struct crypto_tfm *tfm)
+{
+	struct digest_tfm *ops = &tfm->crt_digest;
+
+	ops->dit_init	= init;
+	ops->dit_update	= update;
+	ops->dit_final	= final;
+	ops->dit_digest	= digest;
+	ops->dit_setkey	= setkey;
+
+	return crypto_alloc_hmac_block(tfm);
+}
+
+void crypto_exit_digest_ops(struct crypto_tfm *tfm)
+{
+	crypto_free_hmac_block(tfm);
+}

drivers/staging/rtl8192su/ieee80211/dot11d.c

+#ifdef ENABLE_DOT11D
+//-----------------------------------------------------------------------------
+//	File:
+//		Dot11d.c
+//
+//	Description:
+//		Implement 802.11d.
+//
+//-----------------------------------------------------------------------------
+
+#include "dot11d.h"
+
+void
+Dot11d_Init(struct ieee80211_device *ieee)
+{
+	PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(ieee);
+
+	pDot11dInfo->bEnabled = 0;
+
+	pDot11dInfo->State = DOT11D_STATE_NONE;
+	pDot11dInfo->CountryIeLen = 0;
+	memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
+	memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
+	RESET_CIE_WATCHDOG(ieee);
+
+	printk("Dot11d_Init()\n");
+}
+
+//
+//	Description:
+//		Reset to the state as we are just entering a regulatory domain.
+//
+void
+Dot11d_Reset(struct ieee80211_device *ieee)
+{
+	u32 i;
+	PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(ieee);
+#if 0
+	if(!pDot11dInfo->bEnabled)
+		return;
+#endif
+	// Clear old channel map
+	memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
+	memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
+	// Set new channel map
+	for (i=1; i<=11; i++) {
+		(pDot11dInfo->channel_map)[i] = 1;
+	}
+	for (i=12; i<=14; i++) {
+		(pDot11dInfo->channel_map)[i] = 2;
+	}
+
+	pDot11dInfo->State = DOT11D_STATE_NONE;
+	pDot11dInfo->CountryIeLen = 0;
+	RESET_CIE_WATCHDOG(ieee);
+
+	//printk("Dot11d_Reset()\n");
+}
+
+//
+//	Description:
+//		Update country IE from Beacon or Probe Resopnse
+//		and configure PHY for operation in the regulatory domain.
+//
+//	TODO:
+//		Configure Tx power.
+//
+//	Assumption:
+//		1. IS_DOT11D_ENABLE() is TRUE.
+//		2. Input IE is an valid one.
+//
+void
+Dot11d_UpdateCountryIe(
+	struct ieee80211_device *dev,
+	u8 *		pTaddr,
+	u16	CoutryIeLen,
+	u8 * pCoutryIe
+	)
+{
+	PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
+	u8 i, j, NumTriples, MaxChnlNum;
+	PCHNL_TXPOWER_TRIPLE pTriple;
+
+	memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
+	memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
+	MaxChnlNum = 0;
+	NumTriples = (CoutryIeLen - 3) / 3; // skip 3-byte country string.
+	pTriple = (PCHNL_TXPOWER_TRIPLE)(pCoutryIe + 3);
+	for(i = 0; i < NumTriples; i++)
+	{
+		if(MaxChnlNum >= pTriple->FirstChnl)
+		{ // It is not in a monotonically increasing order, so stop processing.
+			printk("Dot11d_UpdateCountryIe(): Invalid country IE, skip it........1\n");
+			return;
+		}
+		if(MAX_CHANNEL_NUMBER < (pTriple->FirstChnl + pTriple->NumChnls))
+		{ // It is not a valid set of channel id, so stop processing.
+			printk("Dot11d_UpdateCountryIe(): Invalid country IE, skip it........2\n");
+			return;
+		}
+
+		for(j = 0 ; j < pTriple->NumChnls; j++)
+		{
+			pDot11dInfo->channel_map[pTriple->FirstChnl + j] = 1;
+			pDot11dInfo->MaxTxPwrDbmList[pTriple->FirstChnl + j] = pTriple->MaxTxPowerInDbm;
+			MaxChnlNum = pTriple->FirstChnl + j;
+		}
+
+		pTriple = (PCHNL_TXPOWER_TRIPLE)((u8*)pTriple + 3);
+	}
+#if 1
+	//printk("Dot11d_UpdateCountryIe(): Channel List:\n");
+	printk("Channel List:");
+	for(i=1; i<= MAX_CHANNEL_NUMBER; i++)
+		if(pDot11dInfo->channel_map[i] > 0)
+			printk(" %d", i);
+	printk("\n");
+#endif
+
+	UPDATE_CIE_SRC(dev, pTaddr);
+
+	pDot11dInfo->CountryIeLen = CoutryIeLen;
+	memcpy(pDot11dInfo->CountryIeBuf, pCoutryIe,CoutryIeLen);
+	pDot11dInfo->State = DOT11D_STATE_LEARNED;
+}
+
+
+u8
+DOT11D_GetMaxTxPwrInDbm(
+	struct ieee80211_device *dev,
+	u8 Channel
+	)
+{
+	PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
+	u8 MaxTxPwrInDbm = 255;
+
+	if(MAX_CHANNEL_NUMBER < Channel)
+	{
+		printk("DOT11D_GetMaxTxPwrInDbm(): Invalid Channel\n");
+		return MaxTxPwrInDbm;
+	}
+	if(pDot11dInfo->channel_map[Channel])
+	{
+		MaxTxPwrInDbm = pDot11dInfo->MaxTxPwrDbmList[Channel];
+	}
+
+	return MaxTxPwrInDbm;
+}
+
+
+void
+DOT11D_ScanComplete(
+	struct ieee80211_device * dev
+	)
+{
+	PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
+
+	switch(pDot11dInfo->State)
+	{
+	case DOT11D_STATE_LEARNED:
+		pDot11dInfo->State = DOT11D_STATE_DONE;
+		break;
+
+	case DOT11D_STATE_DONE:
+		if( GET_CIE_WATCHDOG(dev) == 0 )
+		{ // Reset country IE if previous one is gone.
+			Dot11d_Reset(dev);
+		}
+		break;
+	case DOT11D_STATE_NONE:
+		break;
+	}
+}
+
+int IsLegalChannel(
+	struct ieee80211_device * dev,
+	u8 channel
+)
+{
+	PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
+
+	if(MAX_CHANNEL_NUMBER < channel)
+	{
+		printk("IsLegalChannel(): Invalid Channel\n");
+		return 0;
+	}
+	if(pDot11dInfo->channel_map[channel] > 0)
+		return 1;
+	return 0;
+}
+
+int ToLegalChannel(
+	struct ieee80211_device * dev,
+	u8 channel
+)
+{
+	PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
+	u8 default_chn = 0;
+	u32 i = 0;
+
+	for (i=1; i<= MAX_CHANNEL_NUMBER; i++)
+	{
+		if(pDot11dInfo->channel_map[i] > 0)
+		{
+			default_chn = i;
+			break;
+		}
+	}
+
+	if(MAX_CHANNEL_NUMBER < channel)
+	{
+		printk("IsLegalChannel(): Invalid Channel\n");
+		return default_chn;
+	}
+
+	if(pDot11dInfo->channel_map[channel] > 0)
+		return channel;
+
+	return default_chn;
+}
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+EXPORT_SYMBOL(Dot11d_Init);
+EXPORT_SYMBOL(Dot11d_Reset);
+EXPORT_SYMBOL(Dot11d_UpdateCountryIe);
+EXPORT_SYMBOL(DOT11D_GetMaxTxPwrInDbm);
+EXPORT_SYMBOL(DOT11D_ScanComplete);
+EXPORT_SYMBOL(IsLegalChannel);
+EXPORT_SYMBOL(ToLegalChannel);
+#else
+EXPORT_SYMBOL_NOVERS(Dot11d_Init);
+EXPORT_SYMBOL_NOVERS(Dot11d_Reset);
+EXPORT_SYMBOL_NOVERS(Dot11d_UpdateCountryIe);
+EXPORT_SYMBOL_NOVERS(DOT11D_GetMaxTxPwrInDbm);
+EXPORT_SYMBOL_NOVERS(DOT11D_ScanComplete);
+EXPORT_SYMBOL_NOVERS(IsLegalChannel);
+EXPORT_SYMBOL_NOVERS(ToLegalChannel);
+#endif
+
+#endif

drivers/staging/rtl8192su/ieee80211/kmap_types.h

+#ifndef __KMAP_TYPES_H
+
+#define __KMAP_TYPES_H
+
+
+enum km_type {
+	KM_BOUNCE_READ,
+	KM_SKB_SUNRPC_DATA,
+	KM_SKB_DATA_SOFTIRQ,
+	KM_USER0,
+	KM_USER1,
+	KM_BH_IRQ,
+	KM_SOFTIRQ0,
+	KM_SOFTIRQ1,
+	KM_TYPE_NR
+};
+
+#define _ASM_KMAP_TYPES_H
+
+#endif