IPA_PDU_HEADER_SIZE
return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,