This header file and macro contain the various structures that are used in the gxlpControl (GXL1CTL/GXL4CTL) service. Each structure is used for a specific control call and passed to the control service on the ctl_data_p parameter. See the description of the ctl_data_p parameter in gxlpControl — perform a parser control function, or the ctl_data parameter in GXL1CTL (GXL4CTL) — perform a parser control function for more details about the use of this structure.