IRB_REQ_GET_MAX_SPEED_BETWEEN_DEVICES - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// 1394.h

typedef struct _IRB_REQ_GET_MAX_SPEED_BETWEEN_DEVICES {
  ULONG          fulFlags;
  ULONG          ulNumberOfDestinations;
  PDEVICE_OBJECT hDestinationDeviceObjects[64];
  ULONG          fulSpeed;
} IRB_REQ_GET_MAX_SPEED_BETWEEN_DEVICES;
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (ns-1394-_irb_req_get_max_speed_between_devices)

_IRB_REQ_GET_MAX_SPEED_BETWEEN_DEVICES structure

Description

This structure contains the fields necessary in order for the Bus driver to carry out a GetMaxSpeedBetweenDevices request.

Members

fulFlags

Specifies the source device. Zero indicates the calling device. USE_LOCAL_NODE indicates the computer itself.

Note In Windows 7, the new 1394 bus driver returns only the speed between the local node and the device. The USE_LOCAL_NODE flag must be set in the u.GetMaxSpeedBetweenDevices.fulFlags parameter.

ulNumberOfDestinations

Specifies the number of destination devices.

hDestinationDeviceObjects

Points to an array of the device objects of the destination devices.

fulSpeed

Specifies the maximum speed returned.

View the official Windows Driver Kit DDI reference

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