lpfc_read_topology
int lpfc_read_topology(struct lpfc_hba *, LPFC_MBOXQ_t *, struct lpfc_dmabuf *);
lpfc_read_topology(phba, pmb, pmb->ctx_buf);
lpfc_read_topology(phba, pmb, pmb->ctx_buf);
lpfc_read_topology(phba, pmb, pmb->ctx_buf);