FC_TLV_DESC_LENGTH_FROM_SZ
FC_TLV_DESC_LENGTH_FROM_SZ(prdf->reg_d1));
FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_lnkflt_desc));
FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_cg_sig_desc));
FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_els_lsri_desc));