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iscsi-target: use native hex2bin for chap_string_to_hex

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This patch converts chap_string_to_hex() to use hex2bin() instead of
the internal chap_asciihex_to_binaryhex().

(nab: Fix up minor compile breakage + typo)

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: "Nicholas A. Bellinger" <nab@linux-iscsi.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Andy Shevchenko 2011-09-30 14:39:54 +03:00 committed by Nicholas Bellinger
parent a3eedc227b
commit f2b56afd40
1 changed files with 3 additions and 31 deletions
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34
drivers/target/iscsi/iscsi_target_auth.c
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@ -18,6 +18,7 @@
* GNU General Public License for more details.
******************************************************************************/
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/crypto.h>
#include <linux/err.h>
@ -27,40 +28,11 @@
#include "iscsi_target_nego.h"
#include "iscsi_target_auth.h"
static unsigned char chap_asciihex_to_binaryhex(unsigned char val[2])
{
unsigned char result = 0;
/*
* MSB
*/
if ((val[0] >= 'a') && (val[0] <= 'f'))
result = ((val[0] - 'a' + 10) & 0xf) << 4;
else
if ((val[0] >= 'A') && (val[0] <= 'F'))
result = ((val[0] - 'A' + 10) & 0xf) << 4;
else /* digit */
result = ((val[0] - '0') & 0xf) << 4;
/*
* LSB
*/
if ((val[1] >= 'a') && (val[1] <= 'f'))
result |= ((val[1] - 'a' + 10) & 0xf);
else
if ((val[1] >= 'A') && (val[1] <= 'F'))
result |= ((val[1] - 'A' + 10) & 0xf);
else /* digit */
result |= ((val[1] - '0') & 0xf);
return result;
}
static int chap_string_to_hex(unsigned char *dst, unsigned char *src, int len)
{
int i, j = 0;
int j = DIV_ROUND_UP(len, 2);
for (i = 0; i < len; i += 2) {
dst[j++] = (unsigned char) chap_asciihex_to_binaryhex(&src[i]);
}
hex2bin(dst, src, j);
dst[j] = '\0';
return j;