need help with sg ioctls

need help with sg ioctls

[Bernd Schubert]

Hello,

for some reasons the kernel.org qla4xxx driver doesn't work for us. Version 
5.01.00.08 seems to work a bit better, but all default sg-ioctl's are not 
defined.

Adding these manually as in scsi/sg.c works, but IMHO is rather stupid. Is 
there a sane way to call sg_ioctl()?
I mean it's static and also not exported and the file_operations ioctl method 
is already taken by the qla4xxx driver.

Do I miss something?


Thanks in advance,
Bernd

-- 
Bernd Schubert
Q-Leap Networks GmbH

Re: need help with sg ioctls

[Mike Christie]

Bernd Schubert wrote:
> Hello,
> 
> for some reasons the kernel.org qla4xxx driver doesn't work for us. Version 
> 5.01.00.08 seems to work a bit better, but all default sg-ioctl's are not 
> defined.
> 
> Adding these manually as in scsi/sg.c works, but IMHO is rather stupid. Is 
> there a sane way to call sg_ioctl()?
> I mean it's static and also not exported and the file_operations ioctl method 
> is already taken by the qla4xxx driver.
> 

Do you mean that with the driver from qlogic.com (or one of the distros) 
you can do sg io to the qla4xxx driver, but with the kernel.org driver 
you have to go through the sg (scsi/sg.c) driver?

Re: need help with sg ioctls

[Bernd Schubert]

Hello Mike,

On Thu, Feb 28, 2008 at 02:15:39PM -0600, Mike Christie wrote:
> Bernd Schubert wrote:
>> Hello,
>> for some reasons the kernel.org qla4xxx driver doesn't work for us. 
>> Version 5.01.00.08 seems to work a bit better, but all default sg-ioctl's 
>> are not defined.
>> Adding these manually as in scsi/sg.c works, but IMHO is rather stupid. Is 
>> there a sane way to call sg_ioctl()?
>> I mean it's static and also not exported and the file_operations ioctl 
>> method is already taken by the qla4xxx driver.
>
> Do you mean that with the driver from qlogic.com (or one of the distros) 
> you can do sg io to the qla4xxx driver, but with the kernel.org driver you 
> have to go through the sg (scsi/sg.c) driver?

I'm not sure about the in-kernel driver, as I was told by my boss it doesn't
work at all with the overland tape library.
And yes, with the driver from qlogic I *have* to do sg io through this driver.
But it only knows its own ioctls, but not the default sg-ioctls.
I'm now adding all these ioctls to the driver, but somehow I think it is 
ridiculous to this when these are already defined in scsi/sg.c.

Thanks,
Bernd

Re: need help with sg ioctls

[Bernd Schubert]

On Thursday 28 February 2008 17:43:51 Bernd Schubert wrote:
> Hello,
>
> for some reasons the kernel.org qla4xxx driver doesn't work for us. Version
> 5.01.00.08 seems to work a bit better, but all default sg-ioctl's are not
> defined.
>
> Adding these manually as in scsi/sg.c works, but IMHO is rather stupid. Is
> there a sane way to call sg_ioctl()?
> I mean it's static and also not exported and the file_operations ioctl
> method is already taken by the qla4xxx driver.
>
> Do I miss something?

Enventually we found the reason for all the trouble. It was a bug in one of 
the debian udev scripts (scsi_devfs.sh), which made it to override /dev 
entries with wrong device major/minors (debian bug Bug#468939).

Sorry for the noise.




-- 
Bernd Schubert
Q-Leap Networks GmbH