Hello,
Douglas Gilbert wrote:
Markus Lidel wrote:
i wanted to ask if it is possible to put the typedef Sg_request into
sg.h?
A surprising question. I would have though Sg_request was
private to the sg driver but ...
Yep i know it's not the best way, but the only way to get some data from
an application to the driver beside the SCSI command itself... Of course
it could be also solved by using separate sg devices, but on an I2O
controller with two harddisks and a RAID-1 this would be 16 sg devices...
It is possible. Seems as though #if __KERNEL__ conditional
blocks are still acceptable in kernel headers and scsi/sg,h
already has such a block.
If Sg_request moved to sg.h then that would require Sg_scatter_hold
to move as well.
Hmmm your're right... Probably a new header file would be better suited
because only kernel drivers need access to Sg_request at all...
The reason i'm asking is, i need to pass data through SG_IO from an
application to the driver. At the moment the problem is solved by
copying code of the SG_IO driver into i2o_config (the passthru
function). I'm working on removing the passthru function and instead
using the SG_IO interface, but therefore i need to pass some
additional data to the driver. I could use the use the flags and
usr_ptr fields in sg_io_hdr_t, but i need to get access to them
through Sg_request.
Any comments appreciated.
Let's see what the style police say :-)
Of course if there is a better way, i would be glad to hear about it :-D
But because nobody else seems to need access to sg_io_hdr_t from within
the driver it's probably the easiest way...
Thanks for your help...
Best regards,
Markus Lidel
--
Markus Lidel (Senior IT Consultant)
Shadow Connect GmbH
Carl-Reisch-Weg 12
D-86381 Krumbach
Germany
Phone: +49 82 82/99 51-0
Fax:+49 82 82/99 51-11
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