[stgt] VSCSI Target Driver

[Bart Van Assche]

On Wed, May 26, 2010 at 6:06 PM, Erlon Cruz <sombrafam at gmail.com> wrote:
>       Im working in a project aimed to port Linux virtio to Power
> Platform, and also documenting vscsi underling operation. While
> reading ibmvstgt.c driver, I found something I cant understand:
>       The SCSI command is extracted from this transport frame (SRP)
> and then pushed to the user space daemon 'tgtd' which process it,
> right?
>        In the case of read/write commands incoming from the initiator
> (vscsiclient), I guess the command is converted in a new read/write
> operation which is performed in the physical disk, is it?
>        I couldn't understand how and who calls the read/write function
> ibmvstgt_rdma() (which effectively put the data from/into the disk)
> and why this function seems to be called after  ibmvstgt_cmd_done()
> function. Why there isn't a queuecommand function like in
> ibmvscsiclient.c used by SCSI?
>        I would be very glad if someone could shed me some light.

Does this help:
http://www.mail-archive.com/linux-rdma@vger.kernel.org/msg01846.html ?

Bart.
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