[SCSI] osd_uld: OSD scsi ULD

Add a Linux driver module that registers as a SCSI ULD and probes
for OSD type SCSI devices.

When an OSD-type SCSI device is found a character device is created
in the form of /dev/osdX - where X goes from 0 up to hard coded 64.
The Major character device number used is 260.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Reviewed-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/scsi/osd_initiator.h b/include/scsi/osd_initiator.h
index 1d92247f820b..a5dbbddcf73b 100644
--- a/include/scsi/osd_initiator.h
+++ b/include/scsi/osd_initiator.h
@@ -33,6 +33,12 @@ struct osd_dev {
         unsigned def_timeout;
 };
 
+/* Add/remove test ioctls from external modules */
+typedef int (do_test_fn)(struct osd_dev *od, unsigned cmd, unsigned long arg);
+int osduld_register_test(unsigned ioctl, do_test_fn *do_test);
+void osduld_unregister_test(unsigned ioctl);
+
+/* These are called by uld at probe time */
 void osd_dev_init(struct osd_dev *od, struct scsi_device *scsi_device);
 void osd_dev_fini(struct osd_dev *od);