Provides the attributes of the tokfastwrt entry point.
The CIO_GET_FASTWRT tokioctl operation is used to get the parameters required to issue the tokfastwrt entry point, which is the kernel-mode fast write command for the token-ring device handler. For the CIO_GET_FASTWRT operation, the arg parameter points to the cio_get_fastwrt structure. This structure is defined in the /usr/include/sys/comio.h file and contains the following fields:
|status||Returns one of the following status values:|
|fastwrt_fn||Specifies the address of the tokfastwrt entry point.|
|chan||Specifies the channel ID.|
|devno||Specifies the major and minor device numbers.|
The CIO_GET_FASTWRT tokioctl operation can be called from the kernel-mode process environment only.
|EFAULT||Indicates that the specified address is not valid, or the calling process is a user-mode process.|
|EINVAL||Indicates that the specified parameter is not valid.|
|EIO||Indicates that an error occurred. See the status field for more information.|
|ENODEV||Indicates that the specified minor number is not valid.|
|ENXIO||Indicates that an attempt was made to use an unconfigured device.|
The CIO_GET_FASTWRT tokioctl operation functions with a Token-Ring High Performance Network Adapter that has been correctly configured for use on a qualified network. Consult the adapter specifications for more information on configuring the adapter and network qualifications.
The tokfastwrt entry point, tokioctl entry point, tokwrite entry point.