+ /*
+ * In the published SRP specification (draft rev. 16a), the
+ * port identifier format is 8 bytes of ID extension followed
+ * by 8 bytes of GUID. Older drafts put the two halves in the
+ * opposite order, so that the GUID comes first.
+ *
+ * Targets conforming to these obsolete drafts can be
+ * recognized by the I/O Class they report.
+ */
+ if (target->io_class == SRP_REV10_IB_IO_CLASS) {
+ memcpy(req->priv.initiator_port_id,
+ target->srp_host->initiator_port_id + 8, 8);
+ memcpy(req->priv.initiator_port_id + 8,
+ target->srp_host->initiator_port_id, 8);
+ memcpy(req->priv.target_port_id, &target->ioc_guid, 8);
+ memcpy(req->priv.target_port_id + 8, &target->id_ext, 8);
+ } else {
+ memcpy(req->priv.initiator_port_id,
+ target->srp_host->initiator_port_id, 16);
+ memcpy(req->priv.target_port_id, &target->id_ext, 8);
+ memcpy(req->priv.target_port_id + 8, &target->ioc_guid, 8);
+ }
+