...
Pointer to variable that will receive the return error code from this function:
NET_DEV_ERR_NONE
NET_DEV_ERR_FAULT
This is not an exclusive list of return errors and specific network device’s or device BSP functions may return any other specific errors as required.
...
NetDev_[Device]ClkGetFreq[Number]()
[Device]
Network device name or type, e.g. MACB (optional if the development board does not support multiple devices)
[Number]
Network device number for each specific instance of device (optional if the development board does not support multiple instances of the specific device)
For example, the NetDev_ClkFreqGet() function for the #2 MACB Ethernet controller on an Atmel AT91SAM9263-EK should be named NetDev_MACB_ClkGetFreq2(), or NetDev_MACB_ClkGetFreq_2() with additional underscore optional.
See also Chapter 6, “Network Network Board Support Package”Package.