Intel Extensible Firmware Interface - Manual (Page 683)

Protocols — Network Support
Version 1.10 12/01/02 15-77
Status Codes Returned
EFI_SUCCESS The function completed successfully.
EFI_NO_MAPPING The AppHandle parameter is not or is no longer a valid
application instance handle associated with the EFI_BIS protocol.
EFI_DEVICE_ERROR The function encountered an unexpected internal error while
returning resources associated with a cryptographic software
module, or
The function encountered an internal error while trying to shut down
a cryptographic software module.
EFI_OUT_OF_RESOURCES The function failed due to lack of memory or other resources.