[SCSI] transport_srp: add rport roles attribute

This adds a 'roles' attribute to rport like transport_fc. The role can
be initiator or target. That is, the initiator driver creates target
remote ports and the target driver creates initiator remote ports.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
index e6f937e..93bd01b 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.c
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
@@ -1599,6 +1599,7 @@
 	/* we don't have a proper target_port_id so let's use the fake one */
 	memcpy(ids.port_id, hostdata->madapter_info.partition_name,
 	       sizeof(ids.port_id));
+	ids.roles = SRP_RPORT_ROLE_TARGET;
 	rport = srp_rport_add(host, &ids);
 	if (IS_ERR(rport))
 		goto add_srp_port_failed;