ioctl for b43 driver

ioctl for b43 driver

[Huy Le]

Hi,

Currently I try aircrack-ng with b43 driver but it is fail at this 
statement due to the following statement:

     ioctl( fd, SIOCGIWFREQ, &wrq ) < 0

This happens because we do not have ioctl for b43 driver. I just want to 
ask if there is any way to work around.

Thanks.

Re: ioctl for b43 driver

[Gábor Stefanik]

On Tue, May 25, 2010 at 3:02 AM, Huy Le <lehuy0406@gmail.com> wrote:
> Hi,
>
> Currently I try aircrack-ng with b43 driver but it is fail at this statement
> due to the following statement:
>
>    ioctl( fd, SIOCGIWFREQ, &wrq ) < 0
>
> This happens because we do not have ioctl for b43 driver. I just want to ask
> if there is any way to work around.

Confirmed with ath9k. Apparently rdev->channel is NULL for monitor interfaces.

>
> Thanks.
> --
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>



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Re: ioctl for b43 driver

[Gábor Stefanik]

2010/5/25 Gábor Stefanik <netrolller.3d@gmail.com>:
> On Tue, May 25, 2010 at 3:02 AM, Huy Le <lehuy0406@gmail.com> wrote:
>> Hi,
>>
>> Currently I try aircrack-ng with b43 driver but it is fail at this statement
>> due to the following statement:
>>
>>    ioctl( fd, SIOCGIWFREQ, &wrq ) < 0
>>
>> This happens because we do not have ioctl for b43 driver. I just want to ask
>> if there is any way to work around.
>
> Confirmed with ath9k. Apparently rdev->channel is NULL for monitor interfaces.

I meant wdev->channel - it got changed recently.

>
>>
>> Thanks.
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>
>
>
>
> --
> Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-)
>



-- 
Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-)

Re: ioctl for b43 driver

[Gábor Stefanik]

[-- Attachment #1: Type: text/plain, Size: 2094 bytes --]

2010/5/25 Huy Le <lehuy0406@gmail.com>:
> On 05/24/2010 06:26 PM, Gábor Stefanik wrote:
>
> 2010/5/25 Gábor Stefanik <netrolller.3d@gmail.com>:
>
>
> On Tue, May 25, 2010 at 3:02 AM, Huy Le <lehuy0406@gmail.com> wrote:
>
>
> Hi,
>
> Currently I try aircrack-ng with b43 driver but it is fail at this statement
> due to the following statement:
>
>    ioctl( fd, SIOCGIWFREQ, &wrq ) < 0
>
> This happens because we do not have ioctl for b43 driver. I just want to ask
> if there is any way to work around.
>
>
> Confirmed with ath9k. Apparently rdev->channel is NULL for monitor
> interfaces.
>
>
> I meant wdev->channel - it got changed recently.
>
>
>
>
>
> Thanks.
> --
> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
>
>
> --
> Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-)
>
>
>
>
>
> Thanks for your respond. However, I can't get what you meant. I am trying
> aircrack-ng and I found in the source of aircrack-ng that they call ioctl(
> fd, SIOCGIWFREQ, &wrq ). But the driver of b43 doesn't support ioctl, so
> this call is failed. Is there any solution for me? My wireless card is
> BCM4312 [14e4:4315]
>
> Thanks.
>

Well, b43 supports ioctls using cfg80211, at least if cfg80211 wext
compat support is enabled in the kernel configuration. The problem is
something else - since the change from rdev->channel to wdev->channel,
monitor interfaces do not have a valid channel pointer in either rdev
or wdev. The same problem exists on ath9k and ath5k, and probably
anything that uses mac80211.

Attached is a C source for a test app that shows whether SIOCGIWFREQ
completes successfully. Compile it using "gcc iwfreqtest.c -o
iwfreqtest", the run as "iwfreqtest <name of interface>". It seems to
consistently fail on monitor interfaces, and succeed on anything else.

-- 
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[-- Attachment #2: iwfreqtest.c --]
[-- Type: application/octet-stream, Size: 999 bytes --]

#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <netpacket/packet.h>
#include <linux/if_ether.h>
#include <linux/if.h>
#include <linux/wireless.h>
#include <netinet/in.h>
#include <linux/if_tun.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <dirent.h>
#include <sys/utsname.h>

int main(int argc, char *argv[])
{
	int fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
	struct iwreq wrq;
	int ret;
	
	if (fd < 0) {
		printf("Unable to open socket!\n");
		return -1;
	}
	
	memset(&wrq, 0, sizeof(struct iwreq));
	
	if (argc > 1)
		strncpy(wrq.ifr_name, argv[1], IFNAMSIZ);
	else
		strncpy(wrq.ifr_name, "mon0", IFNAMSIZ);
	
	ret = ioctl(fd, SIOCGIWFREQ, &wrq);
	printf("SIOCGIWFREQ returned %d with status code %d/%d\n", wrq.u.freq.m, ret, errno);
	
	close(fd);

	return 0;
}