This is an old thread, but I had the same errors. Turns out I didn't have the hardware configured correctly. When I finally did a clean build on my project, the BSP didn't compile and threw an error telling me that I didn't have the interrupt enabled on the ethernet controller.
tl;dr Try doing a clean build and checking errors.
I had the same error of not having the correctly included files. Turns out I had an error while compiling the BSP. I didn't have the interrupt checkbox enabled on the ethernet controller, causing the error. Do a clean build and it will be easier to spot any errors.
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