NetworkPkg/SnpDxe: Shutdown SnpDxe on BeforeExitBootServices Event. #6010
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SnpDxe registers for an ExitBootServices callback and runs the PXE_OPCODE_SHUTDOWN and PXE_OPCODE_STOP commands for any network controllers that the driver is attached to. Register the SnpDxe callback for gEfiEventBeforeExitBootServicesGuid instead of gEfiEventExitBootServicesGuid to ensure the correct ordering: 1. ExitBootServices event 2. Network card shutdown sequence is completed Also, close the event to prevent rerunning the shutdown if multiple ExitBootServices events need to be called by the OS. Signed-off-by: Aaron Pop <[email protected]>
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Description
SnpDxe registers for an ExitBootServices callback and runs the PXE_OPCODE_SHUTDOWN and PXE_OPCODE_STOP commands for any network controllers that the driver is attached to.
Register the SnpDxe callback for gEfiEventBeforeExitBootServicesGuid instead of gEfiEventExitBootServicesGuid to ensure the correct ordering:
Also, close the event to prevent rerunning the shutdown if multiple ExitBootServices events need to be called by the OS.
How This Was Tested
Verified PXE boot was able to complete.
Integration Instructions
N/A