[PATCH] staging: rtl8192e: Fix endianness issue

From	maomao xu <albert008.xu@gmail.com>
Newsgroups	linux.kernel
Subject	[PATCH] staging: rtl8192e: Fix endianness issue
Date	2017-02-16 03:00 +0100
Message-ID	<tbjwu-7ML-7@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Show all headers | View raw

Fix endianness issue about Mk16_le function

Signed-off-by: maomao xu <albert008.xu@gmail.com>

diff --git a/drivers/staging/rtl8192e/rtllib_crypt_tkip.c b/drivers/staging/rtl8192e/rtllib_crypt_tkip.c
index ae103b0..05b66d4 100644
--- a/drivers/staging/rtl8192e/rtllib_crypt_tkip.c
+++ b/drivers/staging/rtl8192e/rtllib_crypt_tkip.c
@@ -162,9 +162,9 @@ static inline u16 Mk16(u8 hi, u8 lo)
 }
 
 
-static inline u16 Mk16_le(u16 *v)
+static inline u16 Mk16_le(__le16 *v)
 {
-	return *v;
+	return le16_to_cpu(*v);
 }
 
 
@@ -253,15 +253,15 @@ static void tkip_mixing_phase2(u8 *WEPSeed, const u8 *TK, const u16 *TTAK,
 	PPK[5] = TTAK[4] + IV16;
 
 	/* Step 2 - 96-bit bijective mixing using S-box */
-	PPK[0] += _S_(PPK[5] ^ Mk16_le((u16 *) &TK[0]));
-	PPK[1] += _S_(PPK[0] ^ Mk16_le((u16 *) &TK[2]));
-	PPK[2] += _S_(PPK[1] ^ Mk16_le((u16 *) &TK[4]));
-	PPK[3] += _S_(PPK[2] ^ Mk16_le((u16 *) &TK[6]));
-	PPK[4] += _S_(PPK[3] ^ Mk16_le((u16 *) &TK[8]));
-	PPK[5] += _S_(PPK[4] ^ Mk16_le((u16 *) &TK[10]));
-
-	PPK[0] += RotR1(PPK[5] ^ Mk16_le((u16 *) &TK[12]));
-	PPK[1] += RotR1(PPK[0] ^ Mk16_le((u16 *) &TK[14]));
+	PPK[0] += _S_(PPK[5] ^ Mk16_le((__le16 *) &TK[0]));
+	PPK[1] += _S_(PPK[0] ^ Mk16_le((__le16 *) &TK[2]));
+	PPK[2] += _S_(PPK[1] ^ Mk16_le((__le16 *) &TK[4]));
+	PPK[3] += _S_(PPK[2] ^ Mk16_le((__le16 *) &TK[6]));
+	PPK[4] += _S_(PPK[3] ^ Mk16_le((__le16 *) &TK[8]));
+	PPK[5] += _S_(PPK[4] ^ Mk16_le((__le16 *) &TK[10]));
+
+	PPK[0] += RotR1(PPK[5] ^ Mk16_le((__le16 *) &TK[12]));
+	PPK[1] += RotR1(PPK[0] ^ Mk16_le((__le16 *) &TK[14]));
 	PPK[2] += RotR1(PPK[1]);
 	PPK[3] += RotR1(PPK[2]);
 	PPK[4] += RotR1(PPK[3]);
@@ -273,7 +273,7 @@ static void tkip_mixing_phase2(u8 *WEPSeed, const u8 *TK, const u16 *TTAK,
 	WEPSeed[0] = Hi8(IV16);
 	WEPSeed[1] = (Hi8(IV16) | 0x20) & 0x7F;
 	WEPSeed[2] = Lo8(IV16);
-	WEPSeed[3] = Lo8((PPK[5] ^ Mk16_le((u16 *) &TK[0])) >> 1);
+	WEPSeed[3] = Lo8((PPK[5] ^ Mk16_le((__le16 *) &TK[0])) >> 1);
 
 #ifdef __BIG_ENDIAN
 	{
-- 
1.7.9.5

Back to linux.kernel | Previous | Next | Find similar | Unroll thread

Thread

[PATCH] staging: rtl8192e: Fix endianness issue maomao xu <albert008.xu@gmail.com> - 2017-02-16 03:00 +0100

csiph-web