Relationship between buffer mode and IRP

Source: Internet
Author: User
The relationship between the buffer mode and IRP is as follows: In the driver layer, the input buffer location varies depending on the transmission type. See the following table. Transmission type location method_in_direct IRP-> associatedirp. systembuffermethod_out_direct IRP-> associatedirp. systembuffermethod_buffered IRP-> associatedirp. systembuffermethod_neither irpstack-> parameters. deviceiocontrol. in the driver layer, type3inputbuffer has different output buffer locations depending on the transmission type. See the following table. Transmission type location method_in_direct IRP-> mdladdressmethod_out_direct IRP-> mdladdressmethod_buffered IRP-> associatedirp. systembuffermethod_neither IRP-> userbuffer

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